yea i would stick with a stock clutch. other wise you have to either 1) shim the crap outta behind the flywheel, or 2) use a kingheadz mount and reverse it which will move the motor forward and change the handling.
personally i feel the losi clutch setup is the best thing to hit 1/8th scale ever lol. so easy to work on and the kingheadz 7075's make it last forever. and the enlarged inner bearing is just awesome.