Not fully understanding the picture here, BUT, my 345 IH has ring clamps, go around both manifolds and pipe with flange, held on by one bolt. Kind of like a swimming pool filter top, if you know what those are like. I think it's a bigger commercial truck thing. Try IH dealer, but need to know diameters of parts probly. Maybe a big truck repair shop or Powertrain type stores would be better choice, ones that sell turbos and so on. Think those migtht have similar clamp used on them also.
