If you don't have a 455HO laying around do some searching on a Magnum 400. These were stripped down tempests ordered with 400 4bbls. I can't remember if they were post cars or not. They were offered through Knafel Pontiac and only about 50 were built. I don't know if any originals have surfaced.
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1968 Firebird 400HO convertible
1971 Trans Am 4-speed, white/blue
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