Instrument Cluster

I am very knowledgeable about instrument panels in some A Bodies with Rally Dash Boards (like my 69 Barracuda). In these, the IVR is built into the Gas Gauge. Unfortunately, I won't be much help to you, but check the people at D & M Restorations out. When I tracked down a wiring problem that caused my gas, oil and temp gauges to not work, I sent the gas gauge to D & M Restorations. They restored it, and it worked great. They are very nice people, and I GUARANTEE they can help you. give them a call.
http://dandmrestoration.com/services/