Originally Posted By: 007
Either my old head unit really needs repair or the newer unit is really good. Sound difference is amazing and now I have Bluetooth in a 86 car.
Even the cheapest new head unit will sound better than any stock head unit from 1986.
If you really want it to sound nice, get some aftermarket speakers too. With most cars, Crutchfield will send you adapter harnesses with any speaker purchase, but you can also buy them separate or make your own. I bet an '86 Regal uses a common size of speaker. Lots of factory speaker cones are made out of what is basically cardboard, and they probably aren't in the best of shape in an '86 if they are factory.