All of us have to live with chance that our car can be stolen but now you have to worry about all other things. Cat converter, spare tire, tires, random parts like bumper, broken window because of stereo or gps...
So, should one try to go beyond good alarm system?
Tail gate lock, camper lock, gas cap lock, hood lock, spare tire lock, alarm with kill switch with back up battery. Key hole covers, skid plate to protect cat, wheel locks, gps tracking device, pedal jack and NOW air bag lock..... faaaak
edit: vin number etching