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Speaking of unusual Pontiac brake options, here’s a lone example of a rare GTO 9.5x2.5-inch aluminum front drum brake assembly. Since the GTO’s standard cast-iron 9.5x2.5 front/9.5x2.0 rear drum brakes were shared with six-cylinder Tempests, enhanced stopping power was welcomed. Available from 1965 to 1966 under option code 442, the aluminum front drum-brake option didn’t increase the meager 269.8 square inches of swept area, but the finned-aluminum construction (with bonded steel liners) shed a few pounds and was more effective at rapidly dissipating heat to ward off brake-pedal fade. In 1967, Pontiac introduced optional Delco-Moraine front disc brakes that boosted the swept area to 350.9 square inches. The aluminum front drum-brake option was quietly discontinued. When new, these aluminum drum brakes received a coat of red paint to enhance visibility and street status.