super six how to tell if it is one

Ok I JUST BOUGHT A 73 DUSTER TO USE AS PARTS FOR MY 73 DUSTER
THE AIR CLEANER SAYS SUPER SIX BUT HOW DO I TELL IF IT IS.

PLUS THIS THING IS PRETTY CLEAN SO NOW I DONT KNOW WHAT I WANT TO DO, SLANT SIX 3 SPEED, INTERIOR IS SUPER CLEAN BODY IS STRAIT. I BOUGHT IT FOR THE BUMBERS AND REAR FRAIM RAIL BUT NOW I AM TORN.

WHAT DO YOU GUYS THINK

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