Volvo: cd player, volvo 850 wagon, exchange radio

Question
where's the best place to buy a used stock volvo 850 wagon radio with both a casette and cd player

Answer
RV,
You might try salvage yards. Tell them the year and model you are looking for. You can also call a dealer to ask about an exchange radio. There is also the option of going to a radio shop and getting an aftermarket radio with all the goodies you need.