Hi im not very keen on different crankshaft types, and what clutchbell/clutch would work with my ntc3, it's a team kit. I would really like to use my trx 2.5 motor with it. It's rear exhaust, and has been ported by a friend, also has a pullstart backplate. And the car has the throttle linkage setup for slidecarb. The shaft seems to short, and the clutchbell supplied by associated(2speed threaded) is a little to long for the IPS shaft,(is what traxxas calls it, i think its os type) so now the clutchbell rides on the top of the shoes, and i cant get it to work. Also i purchased a nonpullstart AE flywheel, clutch springs, and shoes to see if that would do anything, nope. But yeah, i need to find a clutchbell and bearing solution to make it work with my car. I really dont want a new engine, but if i have too ill go with a os max 18tz as recommended by someone else in another post. Thanks for looking, and post up and recommendations or info that would help.