I've got an S-Tec ST-180 Slaved HSI that I don't have the time or the will to install.  The system is green-tagged from Cannon Avionics at KAWO in Washington.  It came from a Glasair project that was never finished and they are parting out.  All components (head unit, remote gyro, slaving panel, flux gate) and connectors are here.  They all look new and unused.