Sam
Your hired..
JMO, I would not get it a big debate about the plating type..

Your choice of clear zinc is fine and may be correct for original Hurst stuff.And other Chevy stuff.
I just happen to like the cad if you can get it. It does have a different look.
It is a better protection, that is why is is still used allot in the aircraft industry.
Carry on CDR