This is a complete King HSI system with all the parts except for the wiring harness.  Shot an approach with it just two weeks ago before it was pulled to make way for a G600 setup.  All of the equipment was carefully removed by Select Avionics in McKinney, Texas.  Each item has a blue tag on it to show that it was serviceable when removed but I still think you may need an 8130 before installing it in a certified airplane.