Gary,
You can move the flanges if you need to.

Have you looked into even newer brakes, like 80 or 90's Chevy truck with a 14 bolt rear. Some discussion that those hubs are also interchangeable and I know brake parts are easy to get and should be for a good while to come.

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-