Which side? Have one side on a GMC but rained hard last night and will be a week before I can get in the storage yard to check both the year and which side is there. I THINK it is the left side but no bets.
Master Parts Book says they are the same, either side. But MUST be from following GMC models or their Chevy equivalents: 150, 250, 280 EC & FC (3/4 to 1 1/4 ton 1947-50) 300 AC, CC, EC & FC (1 1/2 ton 1939-50) 150-22 & 250-22 (3/4 or 1 ton 1951-52, Part was stamped 3681155) As you know, the 3/4 and 1 ton have eight lug wheels.
Just found out that Hollander's says 3681155 is a GMC only part, so if yours is a Chevy it won't help.
May be able to get the 4 wheeler into yard by this weekend. Will snap picture and try to verify year. It is a GMC 34T and if no vent window we're home free.
Bill, I would have bet it was a GMC because it had an inside hood cable release but it is a 47-50 3/4T Chevy. Sorry to get your hopes up.