Just a bit of info for you guy's. If you have an older MSD distributor you need to pull the cap off and check out the internals. Due to condensation mine rusted up which in turn created drag. This caused the distributor gear to wear pretty bad, I am hoping that the cam will be O.K.. If not I will be replacing my roller cam with less than 600 miles on it. So if you guys are having some issues with timing or the car seems like its not running right, check the Distributor. MSD now coats there Distributors to keep this from happening.