I recall the GM part numbers were cast into the outer rim lip on the drums of my 1941 and 42 trucks. Don't know if it is the same on new trucks...

[img]http://www.surfacezero.com/g503/data/3176/medium/IMG_24211.JPG[/img]


1941 Chevy 1 1/2-ton WW2 4x4 dump truck
In the Stovebolt Gallery
Lots more pictures