Originally Posted by Windy City
Lingenfelter is doing their forged 650 HP conversion on my car. I talked to them and they referred me to RPM Transmissions http://www.rpmtransmissions.com/ Lingy is sending my trans to them (auto) for a clutch upgrade. RPM is working on a shaft upgrade but it is still in R&D.
RPM is one of if not THE BEST tranny shops, PERIOD! I would listen to whatever they say, they are a forerunner in tranny performance and do alot of part development in-house...the fact that lingy using them, should be all you need to know.