It looks like those little sneaky hangar elves are back at it again. This time it’s for a six pack panel upgrade! Since there is hardly any information online regarding this subject, I decided to put it out there for all the other little hangar elves. I know some of the avionics are not the latest and greatest, but this is an M20C model and with the money I am saving with the purchase as well as the DIY install (Under an AI/Avionics Engineer/EE, etc…). When upgrading the panel I had 3 options: