Thanks! I am all of 6'2", and 175lbs, and I actually LOWERED the roof height. The original plans looked too boxy. As for the seats, I am using the Kirkey aluminum seats, with the matching covers...they work good, and are easy to mount. BUT, if I did it over again I would have gone with a suspension seat, and made the roof an inch or two taller. As for the leignth, it is just fine for my vanilla gorilla butt, and legs to fit comfortably in. Have you started your build?? I am prolly gonna sell this one, and build a single seater next, and look for a Jeep Cherokee for the family do go off roading in...