It's "rare" because....the headlights are in wrong?

Rockerdude said

Didn't they make a 69 and a half road runner with the 440-6? I know they had a few convertibles.

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Yes, they are commonly referred to as A12 cars cause that was the code used to denote them by the factory.

If I am not mistaken the for the 69-1/2 cars they used an aluminum intake from Edelbrock and on 1970 they switched to in-house cast iron units.