So I was digging through some boxes and found some old home made sha intake parts so I figured I would share. So it's just regular old 1/2" electric conduit. It fits some sha bushings very well. I have a tight radius bender so I can make an pretty good bend with the crap. You can also cut and weld how ever you want. Its 15mm inside so that's cool. I also just get a big ass washer and cut to fit and weld to the washer. I then use a belt grinder or if you dont have one you can get some sandpaper and a nice flat surface and sand away to make flat. Very cheap and easy