I'm new to both the board and to Mooney ownership and figured this thread was as good place to jump in as any, since this is almost exactly what I am attempting at the moment.
I recently picked up an '87 J with a solid airframe, engine, and interior, but mostly original panel. I thought the vintage of the plane was appropriate since that was probably the year I decided I wanted to own a Mooney someday.
It's currently in the shop having the following added:
Garmin GTN 750
Garmin G5 DG/HSI to replace the mechanical DG and one of the legacy CDIs
Garmin GAD 29B so the G5 can drive the legacy KAP 100 that came with the plane (keeping this for now)
Garmin 345R Transponder (ADS-B)
JPI EDM-930 (to replace most of the legacy engine instruments)
With any luck, this will be my "forever plane."
Before and after pictures to follow... Nice to be a part of the group!