all balts are the same except for some options and motors. So if you are looking for headlights, ones that go for LS's work for all models. If you are looking for wheels, just make sure they are 4 lug. If you are searching for intake, just get one that says it goes for your motor and so on.
yeah the only diff between ls an lt is that the lt has power windows and locks, and maybe alloy wheels if you are lucky. When buying performance parts just make sure you buy parts that are for the 2.2 engine. And for appearance everything is the same as long as you do coupe-coupe or sedan-sedan