Headers!

Sanderson dd7, 550 with ceramic coating, 360 without it. They are shorties, so you don't have to worry about dragging them.
Tried a set of Sanderson shorties on my 75 Duster (pwr steeering) & an absolute no fit. They are built really nice w/ good craftsmanship but would not clear the steering box or steering coupling. Might fit other A bodies tho.