Front and rear fenders are the same on late 47-53 and for 1/2, 3/4, and 1 ton.
Front fenders can be installed from a 54 on the earlier trucks, but they look funny with a big flat spot on the font. I don't know about the rears from a 54?

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-