Rear End Noise 8 3/4

I don't know....i do mopar rears, and quite a few super stockers you can see wheels up....

Im not going thru all that for no $50....

Even if i work at a somewhat fast pace.... setting the depth, then the pattern and then the preload.....then final assembly... that is without doing the ring... (you handing me a packed carrier and pinion gear)

Cleaning it thoroughly takes a damn good 15 minutes, or more... then set it in the jig to hold it in the vice...

I can't count how many 742's i have done and spent an hour getting the preload perfect.....or shaving a shim because they didn't come with what was needed.... Way less time setting up a crush collar then a shim...

Your guy is tq'ing these to spec with shims and getting it all done in under an hour...

Sounds to me if your boy is doing it under an hour he is just getting lucky...
________________________________________________

You can either get the gears quiet or much quieter if they're set up wrong...