I have an 87 Cutlass Supreme with the sweep speedo and idiot lights. I found a cluster from another Cutlass that has round gauges and tach. Is this a big mess to change?

 

Hi. Not a big deal at all. Almost plug-n-play. The plug for your tach is probabaly hanging under your hood somewhere. The hardest part is the sensors in the engine for temp/oil will have to be changed. They would be available at any parts depot. The wiring is color coded, easy to verify before final install. Any more ?, just PM me, and I'll be glad to help. Jim.