If you want original looking ones that are forged semi flat on the top you could get them bent at a spring or big truck shop then have a blacksmith flatten them.
That's the method I used.

Alternatively you could order some from a GM dealer for a 90's Chevy 3500HD (not the pickup) they should be very similar. Also some P-30 chassis use similar ones. Best to look and be sure one of those options will work both shape and length wise before ordering.

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-