8. Pontiac SLP Formula Firehawk
The SLP Firehawk was an interesting late muscle cars. The model first appeared in 1995, marking the start of a successful venture between GM and the Street Legal Performance Company from New Jersey. This was an outside firm that produced performance kits for Firebirds (via Zero 260).
However, the cars weren’t just improved base models and were much more. The SLP Formula Firehawk had a 5.7-liter V8 engine with 300 or 315 HP, which was a lofty number for 1995. The six-speed manual version could accelerate from 0 to 60 in 4.9 seconds, making it one of the fastest production cars in America. The package cost $6,500 over the price of the regular Trans Am. It included numerous upgrades and a Ram Air hood, and it was well worth it. Today, Pontiac is no longer around, which means thoroughbred muscle cars from this company will just go up in value.