I am looking for the the WA code for the dark grey metallic for a 70 chevelle. The paint job code that is listed off of the paint codes listed in the tech tab is 16, any help would be greatly appreciated.

Code 16 is actually only used on Buick and Olds, according to my Dupont book. Buick calls it Tealmist Gray Metallic, Olds calls it Oxford Gray Metallic. The Dupont code is 5136L The "L" stands for Lucite, which is Duponts version of Acrylic lacquer. It could also be mixed in Centari, which, at that time, was a non-catalytic acrylic enamel.