Hey Rob.self.
So I have one of those trucks (or should I say axle) too. As 3B mentioned, vehiclesofvictory.com is a source for some parts, and for info. I've sourced parts from Memphis Truck Equipment Co. and from White Owl. But my purchases have only been for parts involving the ends, as in seals and the like for the hubs. The G503 site has some folks that discuss these items. Go to the "trucks 1/2 ton - 2 ton" section for discussions of the G506. Also check out the "2 ton +" section. The 2 1/2 ton GMC utilized the same "banjo" axle in many cases.
Good luck not having to buy from "multiple different" people.
Aint gonna happen.
Tony
