I was wondering how the aftermarket CARB cats (such as magnaflow and flowmaster) mount on the car. They don't have flanges on them. Do I take the old cats to a muffler shop and have them cut and re-weld the flanges onto the new cats? Or is there another way? I also see a bolt-on aftermarket cat from DEC, but I can only find one side in stock.
-- Joe
-- Joe