I'm doing a re-ring and bearing replacement on a 1995 5.0 (302) out of a running Mustang to drop into my 1965 mustang till I can sort out the issues w/ my 289. I'm converting the 5.0 over to carb and I have everything figured out except where to get a 50oz harmonic balancer that will fit my 5.0 crank and 289 pulleys. I can't use the standard summit 302 50oz balancer as it dosent fit my application, the balancer should have a groove to fit the crank vs. the older style press fit. I have the old 5.0 balancer and flywheel. Is there any sort of adapter for 3 bolt pulleys? I may have to source out 5.0 pulleys for the 289 water pump, alternator and crank........don't want to......but if it's my only option I will. Thanks in advance!!!