Ya, they work eather way. This truck seams to be a mut. its titled a 52 GMC, but the doors are definitly 47 to 50. the vin plate starts with 101.But it don't have the factory rivoits. I ordered a head liner for a 47 to 51 and its 2 peace, front & rear, some kinda trim I don't have or is my cab a 52?. I can just tell ya its a pain in the cabboose to order parts. Well catch ya on the next reply.