Jim,
I'm tcolley and had Alan build a taller rollbar for my Unique FIA as I am 6'3" tall with a 37" sleeve length. Originally it was 6" taller than stock but we lowered it to only 4" above stock because it just didn't look quite right. However, with my seat bolted to the floor and with my helmet on...the 6" would have been better. I have to slouch down to stay below the rollbar. If I were to take the padding out of the seat it would be just about right, however, not to comfortable.
Check with Alan to see if he can build you a taller bar that will bolt in without to many alterations to the body.
Regards,
Terry
Terry
Viking Blue 289 Competition Model
#9527
Southern Automotive 351W
Tremec TKO 600 5 speed
3:42 Limited Slip
3-piece Compomotive 17" Pin Drives