premo....have built four Patriot kits, and one scratch built with blown up plans(25%) good kit , great flyer...best engine I used was a Webra Speed 50..very light and a real powerhouse..flown with an APC 9-9 prop, it was radared at 127mph level, 140 out of a dive..if you use retracts, get the Great Planes 60 size with the 3/16 wire...the Hobbicos are Mickey Mouse