The only real difference in the Rodeo 3.2 is that 2000 and up uses drive-by-wire and you'd have to use the intake and butterfly from the old engine. Otherwise it's a direct swap. Even the 3.5 ECU works with the 3.2. Rodeo engines are very common. Junk yards are full of 'em. Honda Passport is just a re-badged Rodeo.