This pre-owned part was purchased a very long time ago at Corvette's at Carlisle. Based on what is written on the non original box, this fits a 65-67 Corvette. Another handwritten note says '67 tach. I am listing this as for parts/non working as I have no way to test this unit. I do believe it works fine but just want to be on the safe side!!! Please know what you're buying !! This part is from a local Corvette collector's estate. I am not a car expert so the pictures will act as a large part of the description. All sales are very final. Thanks !!!