Joe, I have been email pals with Dirk Wacker who is the guy
making these parts. But I haven't heard from him in
probably over year. I have one of his heat shields on my
car now along with the heat shield extension (which was my
idea that he make them :-). He at one time made rear
louvers out of stainless steel but quit because they are too
heavy to ship.
He has always had issues with receiving emails. I bet that
why he hasn't replied is either because he isn't getting
yours or you aren't getting his. He is German but lives in
Malorca Spain. You might try a different ISP to email with.