The airplane sustained substantial damage following a loss of engine power and subsequent forced landing at about 1445 Mountain time. The Private pilot and the sole passenger sustained minor injuries; visual conditions prevailed. The pilot reported that, just after takeoff, when the airplane was about 200 feet above the ground, the engine began to run rough and lose power. The pilot was unable to restore engine power and selected a forced landing. According to the pilot/owner, the airplanes engine had been factory-overhauled about 20 hours of operation before the accident.