The changeout went fine although we had hoped not to have to swap superchargers, but we did.The old one is going out for rebuild. The used pulley had less meat on the coupling disk or backplate and stood off from its mating surface approx. .030 more than it should. The SC seems to be engaging and there is a noticeable amount of power loss from the 65mm to the 75mm pulley. I don't miss the xtra power as stock is plenty for me, however I am concerned about the extra flexing that the dogbone springs will now have to endure. Concerned, that is, until I get scattershields installed.