I hear that these guys make good autopilots.
TruTrak Flight Systems
Another very good autopilot company. They have a -9a that they use as a demonstrator.
GTX-327 Transponder Review
Advanced Control Systems
I was really impressed by this unit.
I met this guy at Oshkosh. He makes a cool tip-up kit for sliders.
Makers of replacement cowls for RVs.
Bryan has designed a nice center console for RV's.