USA GTO's -

    The 1964 model year introduced General Motor’s all new A-Body Platform. The Grand Tourismo Omologato (GTO) package was GM’s first muscle car built on this platform.

The $295.90 GTO option, RPO 382, joined the 1964 Pontiac Tempest/LeMans option list. The heart of the GTO option package was a 325-horsepower 389-cubic-inch V8 with a 421 style cylinder head, dual exhausts, Carter AFB four-barrel carburetor, a mild hydraulic camshaft, special hydraulic lifters, manual three-speed transmission with a Hurst shifter, a heavy-duty clutch, heavy-duty suspension, US Royal red-line tires, a 3.23:1 rear axle ratio, twin hood scoops, an assortment of GTO emblems, twin simulated hood scoops, bucket seats.

Internally called the GMX282, the 2008 GTO will be built on GM's new Zeta platform, now under development in Australia by GM's Holden subsidiary.
The next GTO will carry over the 6.0-liter, 400-horse LS2 from the current car as well as the six speed manual transmission.