The Pontiac GTO is widely recognized as the genesis of the American muscle car golden age, and now, we're taking a look at these classic GTO concept sketches.

Pontiac, GM's excitement division, which was responsible for kicking off the muscle car craze in 1964 with its Tempest/LeMans-based ... with additional body styles for the Firebird range, decided ...

The GTO was already the king of the Pontiac castle in 1966, and the GM brand was pushing hard to make the most of its growing popularity. It didn't last long, as we all know what happened in the ...

Up until the brand was discontinued in 2009, Pontiac was a major ... example is the transitional 1974 LeMans, which marked the move from the older "A" body style to the "X" one.

Body styles shifted as the generations ... as a hopped-up performance version of the LeMans Sport Coupe birthed from the mind of Jim Wangers, Pontiac's chief marketing manager.