I measured 1.5 or 2 ton AD front fenders (on the truck) to be 72" wide inside to inside of the lip at the bottom edge both front and rear of the wheel opening. Don’t have my notes handy for the small trucks.
I’m thinking the fenders aren’t actually much or any wider on the AD big trucks compared to the small ones.

Until you get up to the 400 series GMC, those fenders are noticeably wider.

•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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