That's Milt in the #68 Camaro; Roy Woods drove the sister car #69. They were the Penske Camaros in '69; Woods bought Penske's year-old racecars - even Indy cars - most every year for a while and moved them to his shop in SoCal from PA. Milt was quite the character, basically a wildman; VERY funny guy.
TransAm was a lot like Top Fuel and other classes back in the day; there were the hitters and a lot of average Joes - some with a lot of talent - who'd show up and race.