Sounds like you're looking for max width outside of tire to outside of tire.

The bed is 50 inches wide (inside). Add 1/8" for the thickness of the two bedsides. Then the fenders are approximately 12" from mounting surface to the lip at the crown of the wheel opening. Just measured the fender I have on my work table. Might be a touch off, but likely within 1/4 inch or so.

From the specifications, the width across rear fenders is 74.5 inches, and the track (center of tread to center of tread on tires) is 61 inches.



Kevin
1951 Chevy 3100 work truck
Follow this saga in Project Journal
Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.