Plug the big hole (ext should have came with one)
find a nut that the small O2 will thread onto… drill a hole in the ext and then weld the nut on “exactly what I did” and I have even done it for others…
Plug the big hole (ext should have came with one)
find a nut that the small O2 will thread onto… drill a hole in the ext and then weld the nut on “exactly what I did” and I have even done it for others…