I am replacing my clutch on my Getrag with at Sach 13 inch clutch and pressure plate. The clutch on the truck is a 12 1/4 aftermarket clutch and the pressure plate bolts that came off of it are too short for the Sachs pressure plate. What is the recommend bolt size for the Sachs clutch kit? I understand that the bolt size is 5/16" -18 grade 8, but I don't know what length to get. Any suggestions?

 

Update: The proper length ended up being 2inches.