Hi. My mother-in-law just took delivery of an Outback (Legacy) that came with a double DIN in-dash 6 CD w/radio and NO cassette. She didn't notice this during the purchase and now wants a cassette player.

I have seen a bunch of WRX oem radios (double DIN, indash 6 cd WITH a cassette) for sale on Ebay. Are these radios fully compatable and plug n' play with the factory Outback harness? Her Outback has OnStar - but I don't think that will matter.

Thanks in advance.