I need a flywheel for my motor. I dont know what balance style to get. 50oz imbalance, 28oz imbalance, or zero(internally)balanced. Those are most of the options for Ford. I have an 83GT with a T5 trans. The bottom end of the motor was balanced externally but I still dont know what to look at. The only value on the balance print that looks like it might be it is the Reciprocating Factor. it says Reciprocating 50 % factor. Would that mean that I should get the 50oz imbalance style wheel?