When you say suspension are you thinking about springs or the axles?

What do you want to do with the truck and therefore why do you consider these changes away from more or less original components?

Don't expect to recover any cost above scrap value of the old parts, unfortunately.

Picture link didn't work for me.

•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-