I found a thread on another forum where someone went through the headache of making that conversion. You should be able to find it with some googling. Looked miserable
I wouldn't recommend it. Can/bus system in the newer dash too. MG could chime in, I don't think he'd recommend it either.
Ya i can see how that would be an big issue when going dealing with different drive trains, I'm actually swapping all components, so it would be basically taking all from the newer and putting in the older, including drive train.
What about putting a 00-05 ish cluster with the tach in a 97? They are from the same generation at least but who knows how many wiring changes there were. I keep seeing those clusters at the u pull it yard and would love that tachometer. Anybody done that one?