After carefull measurement I'll need to ream the taper in the tierod arms several thousandths of an inch larger so the nut will have enough room to get the cotter key in it. Taper is the right 1.5"/foot just not quite large enough.

The only ends from Spicer that fit the arms (perfect) were for a dropped tierod and I need a straight one. Then the next likely ones and commonly available would require shortening the tie rod an inch and reaming the holes some.
Using the stock GMC ends only requires the reaming, and I have the reamer.
Ends are ordered.

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-