Well, sorry everyone I was wrong. The supercharger is for the B18C1 GSR motor. I called JR and they did say the supercharger I have is for a B18C1 although with some modification you can make the JRSC I have work. If you call Jackson and ask for the tech dept they can give you the whole story. The # is 888-888-4079.
Thank you and lets get some offers here!!!!!