I don't have any books with that mount listed.

I do have a couple GM truck 4-53 mounts that are rectangular two bolt ones on about a 3" center I think. I can read a part number if you need one, and measure the steel spacers that go in the middle to make some.

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-