I'm about 5'10 ish, and I own a Model A roadster pickup, with a banger. What I did was to extend the back of the cab about 2" which has given me stacks of leg room, I fiddled with the seat a bit and it's quite comfortable, and even if you were taller it'd be ok, but you just havta get out to stretch, maybe you could move the 'tulip' panel back an inch or two, to get you some more length....