Heres what I did as I am a huge person who is paranoid against theft.
First of all the alarm
i have the viper 2 way 690 xv. I have 2 sirens under the hood and 2 in the back, and 1 piezo on the inside. Cant someone just pop my hood and cut the power you may ask. I also have a backup battery and ontop of that a hoodlock from viper made for their alarms. You need a special key inorder to get my hood popped and the alarm must be disarmed. Then I got tint all the way around. You couldnt see inside for your life. Say a theif gets by all that and gets into my car. Well I have my box bolted dont to the frame from the bottom of the truck. Dropped the spare tire, drilled 3 holes from the bottom of the truck up to the bottom of the sub box and lag bolted it down. As for the sub, used 3 different type of screw heads. Philips, square and hex. Securing amps down, I bolted them down onto a amp rack with different type bolts. I always take the face off my h/u when I leave. "Well a person is just going to break what he cant steal" Well id rather have broken **** layin in my closet than some low life parading around with my hard earned money bumping in his trunk. All theives will die.