Here's a pretty wild BBC powered '79.
https://www.cars-on-line.com/gen3-ca.../posting/87649
There are still a few out there. Here's one that was on Ebay last year. I considered buying this one, to make a street/strip car with. But, after considering shipping cost, plus having to replace the 7.5 rear end, I decided against it. I even talked to the guy. It seemed to be a little too clean to make the changes i would have made. Best to let somebody make a daily driver out of it.
https://www.ebay.com/itm/1979-Pontia...orig_cvip=true
Then there are some ads that may or may not be legit or recent.
https://www.cars-on-line.com/87760.html
https://cars.oodle.com/detail/1979-p...urphysboro-il/
http://parkerclassics.com/index.php/...=1&VID=4172625
https://barnfinds.com/bandit-wanna-b...tiac-grand-am/
http://www.classicautonetwork.com/se...e=cnt&aid=4473
https://www.reddit.com/r/Pontiac/com...for_sale_5000/