Ok BITOG polymaths, looking for advice on replacing a factory original 31 year old radio in my '92 Volvo. I don't drive it much and I'm no audiophile even before losing hearing on the starboard side. I've looked over the options from Crutchfield and need a basic, reliable easy to install unit. I also will replace the four door mounted speakers. Additional requirement; Is it possible to keep the original and still functioning Hirschmann automatic rear mounted antenna compliant with a non-Volvo unit?