Flowmax P/N 15826

For 67 and back A bodys drill a hole in the center of the frame rail below the slot for the j-hook on outside of passengers side frame rail , put a 3/8 nutsert in it and reconnect the tank strap with a 1 1/2 to 2 inch fully threaded 3/8 bolt. Or you can make the hole in the side of the frame rail a little bigger and put in a nut and bolt . This will give you room for up to a 3 inch tailpipe.