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Click on image for the lowdown. 
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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Aug 2000 Posts: 523 Member | | Member Joined: Aug 2000 Posts: 523 | First GMC beds are all steel
39-40 and maybe earlier are the same 41+ is wider but if you use a 41+ set of rear fenders they are narrower and it should work
I've 41+ fenders on my 39 look in the gallery Little streachin' worked OK | | |
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