Wondering what year's of fuel sending units would be compatible. Specifically whether the early sending unit will interchange with the one from 67 to the early 70's. I know that the whole system changed but not what year. I imagine the same time as when a ballast control unit was added. I have a early sending unit modern replacement that has apparently failed and would like to fit a more reliable unit. Don't trust the stuff the usual suspects are peddling.
Kurt
Kurt