Dirt Tracker Seat Pan

[SmokeAddicted]

I saw the "317 Hyams" at Barbor this past year, and decided this is the styling I wanted to explore. Such a great looking bike if you happen to catch this thread.

That said, I bought this seat off EBay yesterday. Searching through Google images, this exact seat pan shows up a lot on flat track builds. A couple of Moto Carerra bikes as well.

I want to replace or upholster the padding, but I suck at upholstry. I'm hoping someone can tell me who made these fiberglass seat pans/rear cowls, so that I may be able to locate a better looking pad. One covered in vinyl vs open foam.

My guesses are Saddleman? Moto Carerra? Was there a well know craftsman that made these in the past? They all look identical but I cannot find who made them.