When are you too large for an early A body....

I'm 6'1" 180 lbs. and trying to understand why I am having trouble getting in and out of my '72 Satellite Sebring Plus with the bucket seat all the way back and the slightly smaller factory tuff wheel. After all, I drove my parents new '71 Road Runner to high school for two years (circa '72-'73) and don't remember having any problem at all. Maybe I have grown taller since then? Just not sure. Not a problem with my '65 Valiant and '65 Barracuda.

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Not sure but maybe others can say.. Is not the floor pan and the set of of the seats same as E body? Their relationship to the column and seat is way different than A body especially early A?? I had 4-5 71 up B bodies 15 years ago and I liked how the sat and road way more than an E body, but I think they were designed at the same time , but to me they at lower than the early A.