[mbgmike]

The 3/4 tons boosters are 3.3/4in apart. I was under the impression that only 71 and 72's came with Delco Morraine with disc brakes and earlier years were Bendix but I just now took an old Delco off a 70 drum brake truck. We only sell reman bendix for 70 and older but the Delco are only listed for 71 and 72.
Damn now I am getting more confused.