i don't think the height is the issue, i think the weight is the issue.. there is ample headroom, what does me in is the lateral space.. my back hangs over the sides of the seat..

 

Oh, believe me, height does become an issue eventually. I'm 6'2" and the S2000 works for me but there's not a lot of room to spare. How those folks who are two to six inches taller than I am do it is beyond me, especially with the top up.

Drive Safe,
Steve R.