Found my dads original 1971 duster!

Oh hey, dont get me wrong, I wasnt criticizing! You are doing a terrific job of dealing with this colossal undertaking. All I was doing is offering a suggestion as to what would give you the most reliable temp readings to make diagnosing easier for you. Maybe I missed the part about not being able to find a sending unit, why is that giving you grief, is there something different about your intake manifold? My Autometer came with a sending unit that threaded right in, no fuss at all.
No, I appreciate all the help on here! I’m looking online for the temp gauges and they look to have a long probe. But I just checked Canadian tire and they have this one and it says that different fittings are available. Is this what I’d need? It doesn’t show the part that threads into the engine. Although I could take the spare t17 temp sensing unit that I have to try to make something up to make it work??

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