OK, Thanks. I will go back to square one and start with the orginal shim in the pinion housing. The housing is orginal and the new pinion gear has a +1. Not sure what the original shim thinkness is, measures about .020 with my vernier caliper, plus or minus .001.
Thank you for the clarification on the coast and drive sides, that will make a differance at what I am looking at.
If I question it I will post pics again. Thank you for the input.
1993 K3500 - Peninsular 18:1 engine, marine injectors, high capacity cooling, AL Core Radiator, 3" DP and 4" exhaust, ISSPRO Gauges, Girdle, AMSOIL Dual Oil Filter System, 1997 Air Filter(trashed the K&N), 395K on Body, 165k on engine.
1997 GMC Savana - 6.5 TD
1966 CJ5 - V6 Gas - highly modified
1967 Jeepster - Stock
1986 Jeep CJ7 - Stock
1993 Grand Cherokee - 6.2 diesel
2007 Grand Cherokee - 3.0 diesel