The year and engine must match up obviously. The wiring is already there you just install the new guages. I don't remember if the tranny must be the same or not. If they can be different that's easier because finding an ATX Zetec with a Tach is no easy task. Good luck.
I seem to remember baco99 getting a tach from a v6 and the rpms not matching up. Could be wrong.
