What Ya Suggest For A 500 Plus Horse Motor For A Driveline?and Source To Buy It From . Also What Length Is Proper--302/t-5/--8 Inch Rear End/. I Am Getting A Bad Vibration When Shifting From 4th To 5th At High Rpm. I Think I May Have Made A Boo Boo Cutting Yoke Off An 85 Cougar Driveshaft To Make It Work .u Know The Bolt Up Flange On Newer Drivelines I Cut It Off And Left The U Joint On . And Bolted It To The Yoke Ala Old School .