The formula will be a lot easier for you to mod. Alero's aren't easy to mod unless you have quite a bit of dough to throw at it. And even then, you can't do as much to it as you can a formula. So I would say go for it, but like everyone else has said, you wont get much for your alero, no matter what shape it is in. Top dollar for our cars is probably going to be around 4 to 6K max. Gotta love depreciation!
__________________
|