yea u would have to change the dash harness out...then by doing that u would have to change the engine bay harness aswell b/c the plugs on the ecu side on the 99-00 are diff. from 96-98 ur going from obd2 a to obd2 b so there is a few diff plugs that wont work with each other...in other words to much freaking work to change out some knobs and shit....but either way g/l with that