My apologies to Skywagon, but I have installed them with a small reservoir in place of the fill plug. I put a check valve from an old Motorcraft 2bbl...
Have you considered mounting it between the kick panel and boot cowl? Left or right side. I wouldn't want it mounted right over the cabin heat valve...
This manual lists airspeed and altitude as secondary functions. If you are experimental, you're not bound by certified requirements. You can legally...