I have two to add.
This car was rather prominent back in the day, known as one of the fastest Firebird's of the early 70s. A close family friend drove it for a few years (sponsored by the local dealership), and eventually quit when the constant maintenance required more money than he had. After he passed, it was given to my father, and then given to his close friend. It was a victim of a nasty rear-end collision, and insurance totaled it out. It is currently sitting in a shed, having not seen the light of day in about 2 years. It still starts right up and really isn't in that bad of shape. It's just rather hard to find a bumper for these particular cars. Myrtle Motors Pontiac was a performance-oriented dealership. If memory serves correctly, this particular car came special ordered with a supercharged 455.
The next one is the car I recently came in possession of about a month ago. It has been in the family since new. There isn't much history behind this one, although it's reputable in the family for leaving long, black streaks on the road. Not too sure on the year this picture was taken.