Installed used 3.42's finally

I installed a used set of 3.42 stock gears a while back.I did have 2.73's(A4) and the swap went very good.I didn't even have to buy a shim set just a new crush collar.I set the pinion torque using the spin it by hand method.No noise no nothing all the way up to 115 where I hit the rev limit b/c I didn't have my tune installed yet from pcmforless that would change my speedo back.I got the tune in and I'm heading to the track this Friday with it.I'm in NC now so I'm going to The Rock.Man after reading all the post about how hard gm's are to change gears I was worried o-well that made me so down so that was good.
Eric