Would something like this work, or is it on the wrong edge of emissions?

http://www.ebay.com/itm/CARTER-THERMOQUA...tr#ht_500wt_971


1967 Dodge Coronet Deluxe station wagon

1.03" T-bars, QA1 arms/rods, Cordoba/GM Metric/Volare brake & knuckle, XHDs, Hellwig rear sway, 318 Magnum w/ air gap, 727, 3.23s