This Email was addressed to Ron but I received a copy. I made a special seat of fiberglass sandwich construction and dropped it to within one inch of the bottom of the fuselage. Then I made my own "formers" and raised the cockpit to clear my head. I also widened the cockpit 4" wider than plans. I don't know anything about the Sonerai. I chose the KR2S because of performance and lesser cost. Making all of my parts and making changes in design sure has made my project go on for years longer than I expected. Next year I hope to hit paydirt. Good Luck Ray Goree