all are the same, you only have to remote two fuse to disengage the system... there is only a realy which disconnects the ignition and ecu, thats about it...
in efi cars if the ecu can be disengaged internally than thats a good system, and this is only available in cars which come with stock immobilizer, you literally have to put a new ecu to run the car.....
we made a similar system with a key pad on 05 corolla gli, it disabled the ecu internally, so to start the car without the right combination code you must put new ecu, now this is a relatively safe system..