Rallye Dash tach (71 Demon)

Unfortunately I don't have the original tach. At some point a PO swapped out the bezel with a 1970 bezel (has the cigarette lighter in the bezel and the radio section cut out). Currently it has the blank where the tach should be (a tach is on my build sheet at least). I bought one of the reproduction bezels from PG which is actually really nice and I'm trying to set it up like it was from the factory.
I am also open to finding an OE tach and having it rebuilt so I will let you know if I do.