Ok I have a '67 Kadett Opel L series. I can’t find parts for it. But it does run. Now should I sell it and get something that would be easier to find parts for or keep it just for the rareity?
bassically I want your opinion on the value of the car and if its worth the pain in the end.
Well, your choices boil down to these…
[sub]There. I did it. It’s done. And now nobody ELSE can do it.[/sub]
It depends on how much you like the car. They’re not making any more 1967 Opels! 
As I’ve just posted the MGB project is getting under way. I could save myself a lot of trouble if I got a new Miata. But I don’t want a Miata; I want a 1966 MGB! So it all boils down to how much you want a classic car. Personally, I think it would be pretty neat to have that Opel to drive around. I think that you’ll find that people tend to respond to it. (At least, that’s what I’ve experienced with my Willys CJ2A.)
Is it worth the cost? Is it worth the effort? Only you can decide. But I think I’d enjoy driving around in a '67 Opel.
YMMV (Literally! )
BTW: This guy lists a right-hand tail light lens, if you’re still looking for one. You may want to contact him to see if he has any other parts you need or if he can direct you to someone who has (or to an Opel club, which will have many resources). You may also wish to search on google for clubs.
Hmmmm, you’re in the US, right? It might be a little more valuable over there than in Europe, where it’s not exactly a top shelve classic. It’s a fun car though, don’t get me wrong. Just no Citroen DS material, if you know what I mean. But hey, in time, it may become a true classic. In Germany, some of the early 60’s Opels already are sought-after cars, so who’s to say what a '67 Kadett will do in 5 years?
Surely, there has to be an Opel club in the US somewhere?
I have gone through most of my sources and there appears to be no interest in old Opels, in the US anyway. The January 2003 Hemmings and Old Cars and Parts magazines have no listings for any Opels, either for sale or someone looking for one. Online searches at Old Car Finder and Auto Trader turn up nothing. Valuewise, it will never be considered as an investment quality vehicle. Ebay Motors has a couple GT’s and a Manta for sale but they are not selling for very much.
If you want something to drive on an occasion that is not seen on the road much, you should keep it. Or you could consider updating the running gear. I knew of a guy that put Pinto running gear in his Opel GT. Besides being more reliable, it was much faster too. Or if you are feeling real adventurous, stuff a small block Chevy in it and go drag racing. I look at some of the hassles I had finding parts for my 66 GTO when I restored it, I would hate to find anything for an old Opel.
Aha! I see you’re (almost) 18. When I got my first MGB (my first car) it was old, the upholstery was faded, and it didn’t run. But I fixed it up and had a blast in it. At the time, it was not especially “collectable” since MGBs were still being made (at least for a short time). But it was different from the cars everyone else was driving – Mustangs, Baracudas, but mostly early-1970s beaters of one make or another.
As racer72 says of your Opel, my MGB was not especially valuable at the time. Not overly common in the high desert, but you could still find them cheap. Heck, I ended up with three MGBs at one time! The MGBs were slowly sold off. The '77s I didn’t care about, but the '66 was my first and mom had bought it new. Still, I had a nifty little Porsche 924 to drive around in and it was much better than the MGB. (A Porsche purist will tell you that the 924 is crap. But it’s really not that bad. Of course I liked the 911 better, but that’s another story…)
But in the time I had it, I drove the MGB to work every day. My friend and I put another friend in the “back seat” and drove very fast down twisty roads. What fun! We drove from Lancaster, CA to Denver, spilling oil all the way. (I found out later a gasket was leaking.) I froze in the winter when the temperature was in the teens, as I waited for the damned heater to start working and has I tried to avoid the draft from the loose convertible top. It was a hell of a car.
Now I see a company selling virtually new 1960s MGBs for $25,000. I see beautiful examples going for over $10,000 on eBay. And I had one! So I’ve found a ratty one and I’ll probably spend close to ten kilobucks to make it look new. Why? Because dammit, they’re neat cars!
So your Opel isn’t a collector’s item. So it might not become one (although as Coldie says they’re somewhat poular in Europe). So you can sell it and get something more practical. But how are you going to feel in ten years? It’s been about 15 years since I sold my '66. And I miss it. I wouldn’t keep your Opel because it might be worth something someday; but it is a classic even if it’s not a popular one. A decade on, you’ll have a job and another car that is better in every way; but if you hold onto the Opel you’ll have a nifty old car that very few others have. You will have fixed it up – maybe restoring it to “like new” condition. It will be cool. So I’d say keep it for as long as you can.
On a side note, I listen to NPR all the time. They had a story about a high school girl who got a 1960s American car of some sort. Kind of ratty, but she’s fixing it up. Now all of her friends want a 1960s car. She said she tries to dissuade them from getting one, claiming it’s really more trouble than it’s worth. But on the radio she admitted that her car is unique and that she just doesn’t want everyone else to be driving one. Personally I buy cars based on the “fun factor”. The '66 MGB was given to me, but it was fun. The next two MGBs were bought because I was having so much fun in the first one. I bought the Porsche 924 because it was fun. The econoboxes I had next were extremely practical. The Porsche 911 was fun. The Cherokee is somewhat fun (at least offroad) and very practical. My Willys is fun. I don’t give a damn if people think what I drive is “cool”. In the immortal words of Popeye, “I yam what I yam.” If people think I’m cool based on a thing, what I drive, so be it. If they think I’m a total yobbo because of it, then it’s no skin off of my butt. So drive what you like. The Opel sounds like a nifty car. If, as the high school girl indicated on the radio, old cars are becoming “hip”, then that’s just a bonus.
One of the guys who will be working on my MGB says that it’s easier to find parts for it than for his '60-something El Camino.
Just to get Johhny riled up: everybody knows a Porsche 924 is really an Audi. 
And to piss him off some more, I even misspelled his name!
Yeah, that’s true; but compared to an MGB the 924 was faster, more reliable, handled better, and got better mileage.
Anyway, the point to my post was this: It’s easier to get rid of a car you have than it is to try to get it back later.
I have old motorcycles and I commonly get more invested in them than they are worth, but I love them!, and if I keep them around long enough they will appreciate in value.
Now, as for the OPEL, if you can afford to keep it AS A SECOND CAR, go for it, but trying to commute in an OPEL is probably a bad idea, I love my bikes but I sure am glad that I don’t have to depend on them, besides, how much do you think you can get for the car?.
Keep it, I would
unclviny
Here is a 67 Kadett Opel for only $99 at ebay.com
Item # 1875632301