You've probably painted it already but my two cents for anyone pondering a similar thing -- while it might be worth a bit more in the original color, why not consider one of the other of DOZENS of factory Pontiac colors available throughout the 1970s. Restorers and collectors that are on here...
Yes, this was on either CL or FB in the CA area for a while. I think what turned buyers off were those "minor" rust spots.
In a search for mid-70s Formula, I also encountered an original green '76 400-speed Formula in the Bay Area that was a nice, unusual car -- very unassuming with no decals...
I have almost every Poncho test from '66 to '81 (and then all of the 4th-gen F-bodies, and there are a lot) but don't have this one -- Thank you for sharing .... It's interesting to see what a stock, pre-W-72/T/A, 455 4-speed is capable of, and as a comparison, the times are almost identical to...