Roy,
The seats I have are probably similar to the MGB seats (pretty standard fair for Brit cars of that era). My wife is 5' and want adjustible seats so she can drive, but with the extra 1-1 1/2" my whole head would be above the windshield. As it is when I was mounting my roll-bar I put it 2" above my head when I marked it to cut and when you look at the car you can see that it is quite high.........................but safe. Maybe I should just toss the seats, use pillows and just strap in to the floor
Thanks,
Mike