FORD TOP LOADER BH TO FORD T5 TRANSMISSION. The adapter is designed to use the stock flywheel, starter, pilot bearing, pressure plate, and bellhousing from your engine. the clutch disk used is the corresponding disk matching the transmission input shaft and the pressure plate diameter. For example; if your stock pressure plate for your engine is 11”, you will need an 11” clutch disk with the transmissions input shaft spline (1 1/16 x 10)