I have exactly what you need. Removed from a wrecked 182 that had an AirPlains IO-550. It was manufactured in July of 2014, it is a United Instruments 6331 and is in perfect condition. The engine hours were 440 when the plane had a ‘rough’ landing.
I can’t post a picture, but if you shoot me a text at two.five.three. 584. One seven 9 4 I can send you pictures.
I also have an EI GCR-30P with all of the wiring harness and probes for the IO-550, if you need to spend some additional money before year-end
