Is it possible to swap my speedometer cluster on my 1989 Buick LeSabre which is idiot lights and a trip odometer which does not work with a speedometer cluster from a Park Avenue or another LeSabre which has all the gauges built in? It would sure beat having to hang new gauges somewhere or cut them into the dash.

I beleive that would require wiring changes as well as sending unit changes. Could be quite involved. Chances are the wiring and connection to the instrument cluster is very different, but I could be wrong.

i tried doing that on my 90 lesabre and just a panel swap didnt work. You need to change the wiring.