only OBD1 cars have to do smog...
OBD2 cars just plug and look for codes.
i recently passed last month with no cats, no EGR, no AIR, and no rear o2's.
i DID get SES codes however, but you have to go to a tuner and have them tune them out, or set the perameters so low that it wont trip the code. the local guy i went to, NicD (tech username) who does great dyno tuning/minor tuning, deleted mine at a real good price with LS1 edit.