Chevrolet didn't have the swing out fenders...that was GMC only.
As a side note, GMC had more than one front clip for there LCF offerings. Some of them had the fender extensions on the door like Chevrolet and some had smooth doors without the extensions.
Mike B

Man Alive,Tri-5! I really admire your collection! just to add: Some of the big G.M.C.'s,(like crenwelge's "Old G.M.C. Arrives in Texas"(,posted here in "Big-Bolts),were equipped with a T.F.-style (of course),5-window cab! I'd love to find a cab like that,for my T.F. 6500!