I don’t know, but I would never want to try. Why mess with the nice Trig intergrated comm and Dynon autopilot by jury rigging in Garmin boxes?
I fly IFR 90% of the time, using a full SkyView dual EFIS panel with the GTN-650. I find the Dynon radio (made by Trig) to be superior to the stand alone Garmin offerings (either remote mounted or panel mounted) as it has better front end receiver selectivity.
But I will say for the panel waiting to go into the new RV-10 I’m using a G5 as a backup instead of a stand alone analog airspeed instrument. The G5 gets a direct feed from the GTN-650.
Carl