A replacement from Random Technology bolted right into place on our car's stock Y-pipe. This ensured that it would also bolt right up to the flange on our Edelbrock TES header setup, designed specifically for '83-86 H.O. Camaros. At the other end, however, the cat didn't match up to our after-cat system. Edelbrock provided a matching flange (arrow) and a new 3-inch intermediate pipe. The flange was an exact fit on our new cat, but the I-pipe required some modification; Scudellari handled the cut-and-weld with no problem. The flange and pipe are available from Edelbrock if you want to go with this route; otherwise, you'll need a set of "standard" headers and a catalytic converter to match.