Engine Color on 1958 GMC Pickup Truck
 

I believe the '58 GMC trucks had a 336 cu. in. version of the Pontiac V8 in them.

I'm building a '58 Tri-Power for one of those. I have the manifold media blasted, and the owner has asked that I paint the manifold to match the engine. He says the engine is red or orange.

Does anyone know the color, and whether I can get this color premixed?