For that I would make the part of the clip that is broken and weld it to the remaining part of the clip without ever removing the springs from the truck.
Weld a little at a time to not damage the springs.

If you have them out same deal, but then you may choose to make a whole new clip, or find one from a used set of springs or at a spring shop.

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-