Another great FGFer has done this mod similar to yours, but he took it a step further and extended the upper roof mount point by 3-4 inches, so that the chest-belt didn't choke the average person as it crosses the chest. His mod was perfect and very professionally done.
//break//
Bjorn, your friend sent me the plans for this mod...who was it again in case my historic files are gone?
'68 428 HO M3 Monster, 4-on-the-floor! Need I say more?