Instrument Voltage Regulator for 65 Dart

So yes, the 65 doesn't have a plug in limiter. It uses points in the fuel gauge. The link you posted is the thread that I started when I was trying to fix this problem. It didn't work. Now I find Classic Industries claiming that their limiter works in a 65 but needs a plug in type (contradictory). Has anybody solved their IVR problem in a 65 Dart?