Voltage regulator dart rallye cluster?

Over the years, it is hard to tell what may have been done to any given cluster, but I am positive that 68 and 69 Barracudas with Ralley dashes had the IVR built into the gas gauge. I spent hours testing all of that when I was writing the article. I know about the separate IVR AJ/FormS is talking about, but I don't know for sure what years or dash types it is found in. Like Rocky JS said, with 3 terminals on the back, this particular gas gauge is one with the built in IVR. Otherwise (I think) it would only need 2 terminals like the oil pressure and temp gauges. D&M Restorations rebuilt my gas gauge about 15-16 years ago, and it still works great. So Liquidspine, you might check to see if they are still in business.