T/A Johnson

I currently have a tru trac in my moser that is in my 97 lt1 and I love it. But that is in the Moser. This going into a 2002 a4 3600 stall with 3:42 gears back into the stock housing probably with stock axels.

Any suggestions on which limited slip/ posi err what ever to go with. This will be a 99% street car.

For gears I'm going to go with GM because they shouldn't whine.

Any reasonoble suggestions with experience would be appreciated.