I had a PowerMaster unit, the housing had a bumpout on it that made it almost impossible to use the standard transmission mounting studs. After dealing with it for two installs (changing converter/engine rebuild), I went to Advance Auto and got a standard ministarter for a Dodge Diplomat. The housing doesn't have the stupid bumpout and installed easily. It spun over my 472 with 11:1 and locked timing at 34* without issue even when hotlapping. I'll never buy a special "aftermarket" starter again.