In setting up an ARC-8 system, I find I need a C-87 control box and some sort of an audio panel. By that, I mean something with 4-5 toggle switches and, typically in a Dzus rail installation. A panel from almost any of the AIC-xx series would be probably ok. I can re-label the functions. 

If anyone needs ART-13 meters or knobs, I have some extras.

TNX  Jeep K3HVG