Adding an Autopilot to my M20A with a M20E Wing.

[takair]

4 hours ago, Dave Morris said:

On my A model (N1960), the Britain Accu-Flite servos were mounted under the instrument panel, so no work required in the wing.

Brittain may be a good possibility for the OP!  There are enough systems the used market and I think one could argue the STC applies.  Hard part is finding an IA comfortable with the system, but there are still a few.