I'm 6'4" and weigh 240 - perfectly proportioned in every way
.
I had no problems in the car. You might want to consider leaving a center console out. Also, you might want to stick with the stock seat, as anything with too much of a base cushion might give you a little trouble with the roof. A friend of mine who is the same size
went to an aftermarket seat and ran (bumped?) into a little trouble with the headroom. Upon returning the stock seat into the car, the problem went away. Good luck.