Thanks for the info.

I checked the OldGMCtrucks.com site, for GMC they say that from 1951 to 1958, the paint is :
Dupont Nason Full Thane 2K Urethane, 54701 BD, Code 514, Color Crimson Red - General Motors.

I'll see if I can locate a few rattle cans of GM Crimson Red.

Cheers


Royzell