bob that is correct rp/spiders are ok, clutches could be also but for the price i would replace. i also would replace all bearings you sure as hell dont want to install and have to do over because of trying to save a few bucs, you zr1 guys seem to like 4.10 so that is why I posted here, my 90 vette is a auto with 3.54 that is about as high as you can go in auto. like i said sold several on cf, that is where most of my time is spent geo.
