I have a 230 Challenger se with twin 215's. I took it to the dealer to get the carbon seal replaced on one engine and they discovered that both superchargers are out. I can reach in the air intake on the supercharger and it spins freely (on both motors). So now I must start the search for two new superchargers. Anyone know anywhere I can get them for a little cheaper than the dealer? And can i put the 255 superchargers on my 215 motors? thanks, joel