Air Cleaner Assembly

Can some one help me. I have a 1988 Chevy Camaro RS with a 5.0L V8 Throttle Body Injected system. The LO3 engine. I'm in the process of looking and researching some good aftermarket parts to dress up my engine. Does anyone know where I could find an Air Cleaner Assembly for my car. Not just the lid, but the whole base or could I just get an air filter assembly for a carburated car with the same air intake measurements and stick it in? There are a couple exygen sensors and plugs that I need to detach to remove my air cleaner assembly. Are those hookups vital for the cars operation and gas milage. If some one could help me find some alternatives or an answer to my search for car parts, please help me out. thanks.