In this installation the complete VAC system including the electrical standby VAC system was removed. The existing VAC driven attitude indicator and King KCS55A compass system was replaced with 2 x GI275 EFIS and optional GSB15 USB charger/data loader. The old Century II autopilot and Piper pitch trim system was replaced with Garmin GFC500 pitch, roll and yaw axis autopilot with pitch trim option. This installation also includes a Flight Stream 210 bluetooth interface for the existing Garmin GNS430W COM/NAV/GPS.