....THANKS Dave, THANKS Pat, yeah for my needs I think the True Track would be best. Sounds like Detroit Locker would be best for a drag car but I don't want to take any chances on ruining my transmission. Playing on the street I'm more likely to let on/off the throttle. Plus my car is ALREADY noisy enough! Do all the True Tracks have 4 Spider Clutch Packs??? Or do I have to ask for that one particularly. Thanks again, Bill