Man that blows.
You probably had it broken into BECAUSE it was a beater car. Beater cars usually = gooned up locks, no alarms, etc. Easy target. and from my experience at least, all the little Japanese cars are easier to get frikkin stereos in/out of. :-/ Sucks.
Someone broke into my friends jacked up Taurus once.
They took his original gameboy, and his stereo (shitty aftermarket CD player one).... if they weren't so stupid they would have known the board games in his car were worth wayyyyyyyyyyyyyyyyyyyyyyyyyyy more than the stereo, lol.
at least around here... the most common break ins are the doofy beat up cars. That and I forget the model, some kind of oldsmobile, but they get stolen because the catalytic convertor and some other crap in it are worth $$.
Hopefully they track the idiots down. My friends stuff got tracked down because the thieves hit a few other cars and made the mistake of breaking into a car on the street around 3am, not realizing the owner was sitting on the porch smoking. Not sure what all the owner did, but I'm sure it was comical.