looking for 70 CST information

[Lew4ut]

I have a 1970 CST 1/2 ton pick up that I am in the process of restoring and was wondering if the anyone would have information on the color of paint that was applied to various parts of the underside of the truck chassis, such as the frame, A arms, radiator, radiator shroud, inner fender wells, back side of fenders, etc. Also there is a number 944 that is written on the firewall of the truck and I was wondering if that was something that was done during the assembly process?
Any knowledge or information would be appreciated.

Thanks

Lew4ut