It was a marine vinyl made by General Tire. It was discontinued some time ago. Looks like some of the interior has already been redone. Great boat. Best bet is probably it just look for a durable marine grade fabric in the closest color you can find it. Where are you located? A guy I know went thru MasterCraftskins.com and got some very nice results. I'm sure lots of people will have other suggestions of places that do great work. Looking great so far. Keep updating the pics.
I spent most of my money on booze, broads and boats. The rest I wasted. - Elmore Leonard