I'm 6'3 and never did quite fit in my 123. I always had to slouch slightly, which was uncomfortable. My 126 is the first vehicle I've ever had that has enough headroom. Mind you an 84 Chevette and '52 Morris Oxford aren't exactly large cars. My 80 Camaro is lacking in headroom too, but I don't mind too much, being that it has 430 horses under the hood and runs 12's in the 1/4