You are going to need to run new harnesses to the servos as the wiring is completely different. The servo mounts will work fine, and so should the pushrods. The servo mounts will probably have to be modified slightly to clear a couple parts of the Garmin servos but a pencil grinder will take care of that. I swapped TruTrak for Garmin and that's what I did. As far as the panel work, you are going to install a new EFIS system so providing a place for a Garmin GMC-307 or -507 will be easy.
RV-6 N207AM w/G3X, 1,500 hours +
South St. Paul, MN (KSGS)
Manager - Panel Design, SteinAir, Inc.
A&P, EAA Tech Counselor
We're all here because we're not all there...