This explains everything about driveshaft and pinion setup.

Dana Spicer should know better than anyone.
I think that the type of u-joint we use was invented by Spicer?

http://www.roadranger.com/ecm/groups/public/@pub/@roadranger/documents/content/rr_dsig-3311.pdf

•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-