Gator....
GREAT looking build!!!
The gold version was "used" in the Paul Newman movie, "Winning" running at the IRP road course. The overhead shots showed what looked like a taped over name on the roof, or added for the movie.....
USAC sanctioned most likely.
Curious if this one along with a blue/gold one, numbered 47 along with a different sponsor, though no good shots of it, if Holman/Moody fielded these cars or were copycats for the movie.
The all gold #17 looked a lot like your build. complete with the thin stripes and sponsor....
Just wondering if anyone would know.