[b3warnick]

I do know that a lot of guys have changed pulleys to make some HP...but a lot have just forgone the factory Eaton SC in favor of a Whipple or KB...then the HP numbers go crazy and the stock block and internals take such mods very well.

At either case, I wouldn't by anything from RPM Outlet...lots of guys at Mach1registry have had problems with orders not filled, shitty service, parts missing from orders, etc. They don't seem to be very reliable at all.