Here's the dealio-I have a flexplate that is supposedly a '73ish 360 flexplate. I haved a '73 flywheel I want to use on this motor. If it is required----- I would like to balance the flywheel to the flexplate balance factor. How do I tell a 360 from a 390 flexplate? It has one balance pad. The pad is 2 inches long. I will look at it tomorrow and key where it is on the flexplate in relation to the three balance dimples and report their relative positions. Steve