I finally got this installed.
I went with this install, the MFI does not adjust the cylinder banks individually so this was the easiest install.
Routed along the driver side, and split the throttle bellow and pulled cable through, lots of room and strapped it up and away.
Installed the gauge in a homemade bracket where the ashtray usually would sit. Both earth and 12V+ easily available. Breaking in the engine so redline 5000 rpm for another 500 miles.
Tomorrow I'll bring my MFI tools and hit the road.