98black6

Just recently bought a 98 trans am LS1 6 speed. Im about to send the trans. off to hawksthirdgen to have the level 2 kit installed due to the bad synchros. Any opinions of this company/ products you have bought from them in the past would be appreciated. But while i have the transmission out, i have a rear end noise while driving and when in neutral decelerating and i am a honda mechanic but never deal with RWD problems. Wondering where i could find the pinion bearing kit with pinion bearings and whatever else i would need to do the job. thanks for any help you can give .. thanks