[moorepower]

The best way to hold these together is to use a welded on tab on two opposing tubes and two opposing collector tubes with a 1/4 inch bolt fastening them together. Use a exhaust sealer on the inside of the sidepipes to sel them up. Use sparingly as not much is needed. A tig welder will do a much nicer looking job. P.S. will hold in too much heat and burn the carbon out of the metal cand cause the part to fail.