i'm at work, and can't browse through PP's pictures of this past weekend's Dunkel bro's event, maybe steve's picture is in there..
do you still check this list, Steve??
Steve is ~6'6, mid 200lbs??.. BIG guy.. (he says he's only 6'5, but i call shinanagance on that, my roommate aaron's 6'4, and he has to look UP to talk to Steve)..
anyways, steve modified his 914 floor pan, basically cut the back part, tilted the floor down about an inch, and then welded additional material to close it off..
so, in conclusion, unless you're 6'6 and above, you can probably fit in the 914 without modifications..