Available for Sale: Two certified Garmin G5s (DG & HSI), one Garmin GMU 11 (Magnetometer), one Garmin GAD 29B(ARINC 429 avionics data bus module). I have the mounting brackets and wiring harness. The units are in excellent condition and were removed from my Comanche 250 during a complete panel upgrade. There are no cosmetic defects nor operating issues. New units cost approximate 6K or more. I am asking 3.5K for everything.