No matter WHICH clutch you end up with ( I would highly recommend Centerforce ESPECIALLY for street use). ALLWAYS,, ALLWAYS have your engine BALANCED!! The balance of engine pieces can NOT be determined by sight. Two parts can LOOK identical but in fact be different weight. How much does balancing an engine cost? In most shops balancing a V-8 should be less than $200. Would you remove an engine, disassemble it, repair the imbalance, assemble and install it for $200?? No?? Then WHY aren't you spending the $200 to INSURE you won't have to do that?? I balance ALL my motors, even the stock rebuilds. You would be AMAZED at how far out some of the parts are! But hey,,,, that's just me!!! Bruce Hevner