sup! Since your car is a 1998, it's an obd2. Remember one thing, all 94-95 ls are obd1 and all 96-98 are obd2, but all 99-01 are obd2b or obd2.5. It might not seem like that, but that's how it is. If I would you i would go for an obd2 since my car is an obd2. Also, it's illegal to swap a motor that is older than your car into your car. If you swap an 1996-98 ls, you can always go to referee check and register the motor as an civic ls so you won't get in trouble when you get pull over by cops. Remember, whatever you swap always go for an obd2 so you won't have to go through stress and headache. LOL.. aight later