On 3/10/2020 6:44 PM, wrote:
> Yes it was in the Bonneville. You could get a dealer option/install for your Firebird, the Formula 400 cars in 68 and I think in 69 as well. I've seen a 68 Formula Firebird with a 428 Ram Air 4 speed at a car show and the owner told me that it was installed by the dealer.
>

Not a Chevy engine.

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ÄLSKAR