Kevin
I feel your pain, I personnally do not like Zink plating. On all the cars I have done I am lucky to still get white and yellow Cad done here in Akron at Berringer Plating. Man they do a great job for me, but I really prep well for them.
This first picture of the Booster and MC cover is Zink. Notice the shine. This was done by Steve Gregori in CA. Great job he does by the way.
These next shots are Cad I had done on the last car.
You can tell the finish is not as shiney. The Cad coating is far better for corrosion protection too.
Hope this helped
Mike A