I need some advise from any of you that have ran roots type superchargers on small block chevys..this is my first.. I have the 3" wide drive pulleys and am trying to get it sorted out to run a single accessory drive for my water pump and alternator..I have switched my long water pump out for a short pump and scrounged up a stock pulley for a short pump..I will change this for an aluminum pulley at some point, just trying to mock up at the moment..As you can see from my picture, I'm not even close..I'm just wondering if I need some kind of spacer to space the blower pulleys out ,looks like they need to go about 1.25 to 1.50 inches to make it work..any opinions??