I've seen repros done by Daniel Carpenter. They are as close to OEM as I've seen. My repro is a little big thicker than aluminum foil and I'd like to replace it, but don't want to pay the prices they want and find out I'm getting the same thing.
I just heard about him He's located in Charlotte, I believe, is a supplier only. Once I get more word on him, I'll let you know. Hopefully, someone else has worked with him.
I did see one of his shrouds earlier this month and was impressed with it.