All of the ABS headliners are made by Acme headliner company. I am not really impressed with the fit or their upholstery work either for that matter.
Matt is waaay too buried at work to be on the internet web sites. However, a little birdie told me that he may be hiring a very knowledgable someone on to help him with the business.
This and other websites will certainly get some more attention at that point.
He will hopefully put some more effort into SSPs, SVOs, Cobras etc. and really catering to the hard to find parts.