Is it worth it?
You will also need a 2 bbl. air cleaner.
The Aspen and Volares, had Super Sixes and I think some pick up truck, early Miradas and Diplomats I think.
MY seat of the pants dyno says my 75 Valiant runs a lot better. I imagine I'm getting better gas mileage than the 1 bbl. Holley that was on there.
Keep your eye out on here and Slant Six .org. There are still honest people out there that aren't trying to retire by selling you a super six set up.