Would it be possible to install a gated shifter (like the ones on Ferrarris and Lamborghinis) on a regular manual car, more specifically a Nissan 300zx, without changing anything major like the transmission? If so, does anyone know of a website that explains how to do this? Thanks.
Sure you can. There’s nothing magic about a gated shifter - it’s just a metal template that fits over your current shifter. Whether or not it adds any real performance is the subject of debate on many automobile boards.
Every kit has different instructions, so posting them here would not likely be helpful to your application.
I will add this - the last person I know who did something like this (on their 1993 Toyota MR2) said it took about 1 hour to do, from start to finish, and did not involve doing anything outside of the cockpit.