The only other OHC Pontiac powered drag cars I know of are a '67 Bird G-Stocker, and an H/Gas Anglia, called Hole Shot 6". The Anglia was a record holder. I think the pic below was taken at the '71 US Nats.
https://www.google.com/search?q=hole...mf8M7-Lg9wzAM:
https://i.pinimg.com/originals/23/09...a5006a8ab2.jpg
Don't have any info on the Bird.