Pontiac's second generation V8 engines shared numerous similarities, allowing many parts to interchange from its advent in 1959 to its demise in 1979. Sizes ranged from 287 cubic inch (4703 cc) to 455 cubic inch (7456 cc). This similarity (except the 301 & 265) makes rebuilding these engines relatively easier. This feature also made it possible for Pontiac to invent the modern muscle car, by the relatively simple process of placing its second largest-displacement engine, the 389 cid (6375 cc), into its mid-size car, the Le Mans, creating the Pontiac LeMans GTO.