Hey guys, I'm 3 years into the restoration of my M20E. Last year I upgraded the panel with Avidyne IFD550 navigator, AXP322 Remote xponder and AMX240 audio panel along with other goodies. The work was all done by a avionics shop.  This year I am installing a Bendix/King KLR10 AOA myself with my AP/IA looking over my shoulder.  The install has been a fair amount of work including the probe install but it has all gone very well.  I am finalizing the wiring and have an aux output from the KLR1