I am 6'5", 245# and own a 1975 450 SL(R) as well as a 1980 300SD. On the the SL, other that getting in and out of a low sitting car without tilt steering, I actually have more than enough leg room once in the car. I have found that all of the Mercedes that I have been in except the SLK with manual seats fit me quite well.

Keep it between the curvy lines!

WD40