G'day, this is my first post, new to the forum, I have a 1998 a Jeep Cherokee Sport. I got but with no keys, I have had a locksmith out and he cannot retrieve the pin for the transponder, our jeep dealership cannot guarantee getting the PIN number either, is it possible to change the Ecu, ,ignition and door locks from another model and if so will the ecu need to be flashed, any help is appreciated, thanks.