Dual wing locker fuel tanks, alcohol windshield, McCauley props w/prop synch, RAM engine baffle modification STC, RAM engine cooling baffle STC, RAM vacuum pump cooling STC, RAM exhaust slip joint STC, de-ice boots, vent fan, micro vortex generators, rudder gust lock, Airstair door saver STC, vapor cycle air conditioning STC, fiberglass dome hubcap STC