W/ this type question it always best to call local Dealer part shop and ask them. If no help there, try a local chop-shop junk yard but now they computers may not go back that far. Then u hit rock bottom. Try pubic library some have car repair alcove so you could look it up in a paper chase. Good Luck
Those are both the same generation of Grand Marquis (92 to 97), and they are all the same, like their Crown Vic counterparts. I think you are safe in using the dash, but the instrument cluster module will need some reprogramming to work with the engine control module to reflect the proper mileage.
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