[ac97gt]

i was wondering how difficult it is to install a keyless entry system for my car, possibly with an alarm. an alarm would be a good bonus but what i really want is the keyless entry. unfortunately it didnt come with it from the factory, but i seem to remember hearing somewhere that these cars came with the wiring already setup for it? does this wiring (if it exists) let me hook up any keyless entry system i purchase, or does it have to be a ford one? either way, is there a place where i could buy a ford one (maybe used) cheap? any info. on this would be great, but mostly i just want to know if its a job that can be done in the driveway or if its worth the money for the install. btw my car is a 97 GT.