possible? yes. practical and efficient? no. you would need the keyless entry module from a 99-00, the alarm from a 99-00, and the wire harness for a 99-00. then you would have to reroute all the wiring from the factory 96-98 headunit to the new 99-00 alarm and keyless. it would be a huge hassle. it would probably be more worth your time to buy a 99-00 civic lol