Just to make it easier for you, almost any older Toyota ones will work. They are all interchangeable. Only thing to be careful about is that there is 2 types. Internal Amp and External Amp. It's easy to tell apart, as one radio will have 2 plugs in the back, and the other will have one. You need to make sure the one you get, is the same. The cheapest place to get it will likely be Ebay. There is actually many there.
~Adam
~Adam
