My recently acquired 2000 came with what I am assuming is a master key(starts truck and has door lock controls) and a valet key (just a basic metal key no shell or buttons). I don't like carrying the master key, it is too bulky. I would like to keep the current master inside the truck, to make the immobilizer function, and get remote fob for locking and unlocking the doors, and then use a valet like key for the ignition. Would this setup work? If so where can I buy a door fob? Thanks