1966 Pontiac GTO For Sale in Portland, Maine 04102 Look out muscle car enthusiasts! This 1966 Pontiac GTO Convertible is ready to fuel your passion. It features a sleek, athletic styling that has become an icon of classic muscle cars. With beautiful Montero Red paint complemented by the original, reconditioned Parchment White leather interior this charming GTO is sure to turn heads. Powered by ...