73 340 duster thermoquad spacer ?

RustyRatRod said
The only reason I was thinking was maybe if they used some left over 70 intakes on the early 71 and used an adapter plate for the TQ. Evidently, that was not it.
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No, it was the good, ...100 casting number, I still have it and the TQ. That combo was too good to let go.