The ADVANCED Pilot two axis autopilot fits in a standard 2.25" round instrument hole (Flatpack Avialable), and has EFIS Controlled Heading Bug Mode, NAV Mode, GPS LPV Capture Mode, Altitude Bug Mode, ILS Capture Mode, and Vertical Speed. It has a built in Digital Slaved Directional Gyro, Horizontal & Vertical Steering, and a Trim Sensing Pitch Servo that Enunciates for trim.