I’d been poking around local tool stores for a while, looking for tubing benders. I’d found and purchased a 3-wheel tubing bender, but so far no mandrel-type benders. I need both types. Finally, someone suggested I try a shop that builds headers and exhaust systems, and bingo, success, not 100 meters from my daughter’s school. They have a huge floor-mounted motorized unit with all the necessary mandrels. Of course, on the same day, I found a shop selling mandrel-type benders but it appears I don’t need one now. So the header shop says, sure, they can build the rollover hoop, although I’d have to wait about 10 days as they’re booked solid until then. The price was right, however. Really right