Yes the product is excellent - my 65 Deluxe convertible has door panels from SMS and I purchased all NOS vinyl from them. Service is a little slow they have a good selection of NOS fabrics for interiors.
I had a great experiecnce with them a few months ago, great customer suervice. They informed me there was a 2 week lead time after the order was placed before it ships, so keep that in mind. But they had a fabric in stock that I thought no one had or made.
Twenty years ago I helped make some of the impression dies for them back when they were pretty small and down in SouthEast Portland. They always paid their bills and seemed very driven to provide the most accurate reproductions possible.
send an example of your vinyl if you can -- some GM names and even codes dont match good. see <center> </center> 1971 - 73 Sandalwood what color is it really - same sort of things with burgundy , rosewood , burnished bronze plus the cross between GMs
Thanks for the input guys. I have a set of door panels there that have been there for a while and I was starting to get worried. I feel better about it now.