I don't have part numbers for the spindles, rotors I've had no trouble looking up at NAPA.

Paul,
I have several lathes and am probably a decent fabricator... I'm absolutely sure the above method of swapping existing P30 parts is by far cheaper, faster, and less trouble than machining brand new hubs from scratch as well as designing and fabricating caliper brackets.

The beauty of the P-30 spindle swap for the 1.5 or 2 ton AD trucks is the only machine work necessary is boring and reaming some bushings.

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-