Yes and No, you could still order a hood tachometer from the dealer in 1972. That was the last year. I have the parts book, page 22, the part number was 3420740. It was $58.45. No you could not order it factory built it was a dealer order part only. The book shows the Dixco type but the last ones I remember back in the day looked just like the GM type. DIXCO made the early style just like the Mustang used. Didn't sell many but they were out there. I still have an old beat up one in my stash. I hear this a lot because the GTO got the fame for it. First one I remember see was on a 68 Charger but later I do remember the AMC "The Machine" had them from the factory but they were the smaller ones like the 1972 ones I remember.