Many years ago, this was the first topic I posted here
I dug into this as deeply as I could. I too have both
stainless & galvanized steel versions of the heat shield.
My findings seemed to indicate that the SS version came on
the Corvettes only. Though I can't imagine why.
As I recall, it was one of the first "useless" items us
know-it-all's tossed once we pulled the starter.
They show up on ePay all the time.
Steve