I’m about 6’4"-6’5" and I have what I consider to be a disproportionately long torso.
My question is, compared to the average person, where is the difference in height coming from? I figure that my leg bones are longer, but are my verterbrae slightly larger than average? Are the discs between them longer?
Do I have a longer skull?
Is it just that I am a little bit bigger in several parts and it adds up?
Bob spake:
“Is it just that I am a little bit bigger in several parts…?”
We’re not too full of ourselves, are we?
I’m just referring to the parts which can be measured in polite society. 
Braggart. 
your humble TubaDiva
reminded of Mrs. Campbells’ statement about her husband: “He’s 6’4” . . . and everything to proportion."
Since everyone here seems to be so concerned with my anatomy, I would like to state for the record that I have relatively short stubby fingers for someone my size.
I assume that’s what everyone was concerned about.
Size 12 shoe.