I'm 6'3" 290# and own a highly modified Contemporary. I could not even think about driving it when I first got it as evidenced here:
By removing the seats you can get 6" lower and 6" further back. I had my seats built and installed onto the floor and rear bulkhead. I have a FE and by moving the drivers side rear header forward, gained 2" in the foot box which is HUGE. Also cut the transmission tunnel by about 4" getting much more room at the knee/thigh area. Moved the steering wheel over to the right 2" so knuckles wouldn't hit the door. Nick Acton did a lot of the structural modifications and did a great job. Seat construction was done here, in Maryland.
Modification progress pictures here:
My Cobra pictures by mdman352 - Photobucket