I have a mid 60's 390,2 barrel. This is definetly a rebuilder, spins over. Its kind of in the way, My 58 has a good y-block, the 57 is getting a 351W. So I have no short term plans for this engine. I may do a ranchwagon one day, but I have a 69 GT390 for that. So my question is, is this thing a...