cad / zinc /galvanizing on certain parts

[JRSully]

Spoke to Jeff Dotterer last night, he mentioned that Caliper backing plates/Alternator fans/and Coil Brackets on say a 70 L78 were actually Galvanized,and that nobody has been able to reproduce that. I was under the impression that at least the caliper backing plates were gold or silver cad plated. he went on to say that everyone uses the silver zinc paint, closet thing to the galvanizing, Any thoughts on this, trying to see what is considered correct and restore accordingly. Thanks as always