#19 Pontiac GTO
Originally an optional package for the 1964 Pontiac Tempest, the GTO was arguably the founder of the Muscle Car era with its 1964 model rocking a 389 cubic inch motor, putting out roughly 325hp. Over the next few years, engine sizes continued to increase and by 1970, the GTO Judge featured a massive 455 cubic inches. The original GTO was the perfect family man muscle car because it was big enough to pile the family in.