Hello,
I have mounted a spare on the side of my 1953 3600. The bracket I found was not 100% correct, because it was from a 1954, which had slightly different bed sides, but it worked OK.
Now the weight of the spare causes the left side of the bed to be low, by almost an inch. Obviously, GM knew this, because the Factory Assembly Manual shows a spacer that was used to level up the bed. The part number is 2308561. I'm sure that a small block of steel will work just fine, but does anyone know the exact dimensions of the spacer shown in the manual?
Thanks, Harry