Unbeliveable but I have no radio in my car any more cause last week I just found my car open in the morning with the stock radio panel taken away. Just the panel was gone, the radio itself was intact. Always park my car on the street and yes, I have a alarm system but it didn't detect the intruder that night. Chances are I forgot to lock my car if that's possible at all. But I doubt that. I just can't figure out who needed the panel cuz it's worthless without the radio. And the panel case I kept in the glove compartment was carefully taken away too. Well this way or another now I need a new radio. I just want a plane 1DIN mp3 radio, will any model fit my aveo? Can there be any differences in size between different models? What would you guys suggest?