Old thread yes...
In the mean time we have come up with a Wheel and tire Tech Tip that has lots of great wheel info.
http://www.stovebolt.com/techtips/wheels/

Other options for the medium size 10 lug GM wheels with 8.75" bolt circle.
Find used Accuride 22.5" wheels with the correct bolt pattern.
Or used original (older) 22.5" wheels like this
http://rides.webshots.com/photo/2265814630080251109jvRWTd

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-