I pulled two free C5 tranny's today that were behind early 80's 3.8 V6's. What balance is a 3.8L???....0oz, 28oz, 50oz or something else? The converters have 11.5" bolt patterns. I figure that if the bells/flexplates won't fit a 302/351W then I could ebay the parts that are no good to me. I'm building two good race tranny's using two C4's and two C5's for donors of various parts.