I bought the drag link repair kit and replacement balls from the Filling Station. Didn't have any issues with them. I believe the drag link is the same for '51 1/2 ton thru 1-1/2 ton.

Drag Link and Tie Rod Repair kit - PN FS-148
PR DRAG LINK BALLS - WELD-IN - PN SA-156

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.