Pontiac revived its iconic 1960s "muscle car" for 2004 as a midsize V8 coupe based on a car built by Holden, GM's Australian branch. A 350-hp 5.7-liter V8 derived from the Chevrolet Corvette drove the GTO's rear wheels via a 4-speed automatic transmission or available 6-speed manual. ABS, traction control, and a limited-slip differential were standard. Seventeen-inch wheels and performance tires were the only available wheel-tire combination. GTO had seats for four and came with leather upholstery, in-dash CD changer, and remote keyless entry. Side airbags, sunroof, and antiskid system were unavailable.