20. 1978 Trans Am T-Tops
One of the most visually recognizable muscle cars of the 70s is the 1978 Pontiac Firebird Trans Am. The ‘78 model was as close to a convertible without being one as you could get. If you own a 1978 Firebird Trans-Am, you could have one of two ‘T-Tops’ design. Hurst Hatch was the original design, but halfway through production, Pontiac switch to a Fisher design. The Hurst Hatch had a tendency to leak, which is why it was replaced.