EAA publishes a great book called Aerocrafter that lists about 700 kitplane designs, many of which are PFA approved. <a href="http://www.aerocrafter.org" target="_blank">www.aerocrafter.org</a>
If I built a kitplane it would be one of the RV series, probably the RV-4. <a href="http://www.vansaircraft.com" target="_blank">www.vansaircraft.com</a>