The popularity and performance of muscle cars grew in the early 1960s, as Mopar (Dodge, Plymouth, and Chrysler) and Ford battled for supremacy in drag racing. The 1962 Dodge Dart 413 cu in (6.8 L) Max Wedge, for example, could run a 13-second 1/4-mile dragstrip at over 100 miles per hour (161 km/h). By 1964, General Motors' lineup boasted Oldsmobile, Chevrolet, and Pontiac muscle cars, and Buick fielded a muscle car entry a year later. For 1964 and 1965, Ford had its 427 cu in (7.0 L) Thunderbolts, and Mopar unveiled the 426 cu in (7.0 L) Hemi engine. The Pontiac GTO was an option package that included Pontiac's 389 cu in (6.4 L) V8 engine, floor-shifted transmission with Hurst shift linkage, and special trim. In 1966 the GTO became a model in its own right. The project, led by Pontiac division president John DeLorean, technically violated GM's policy, limiting its smaller cars to 330 cu in (5.4 L) displacement, but the new model proved more popular than expected, and inspired GM and i