dumb dumb dumb dumb dumb. I hope you throw another bearing. Waste of $. Make sure they dont shave the heads too far like the did on mine, otherwise you'll be unable to make the power you want to! Ask Harry @ ZTuner. He's got loads of horror stories about Doug. I think one just a few months ago where they put a 2+0 exhaust on a 2+2 and it burned the kids paint right off the rear valence. A+++ work