Well im sitting here thinking of what i can do to make my shit for harder to steal and this is what i came up with.

1. Using 4 different screws, different heads making sure they were atleast 2 1/2 inches long as some theifs stick screw drivers under the amps and jus pry short screws up
2. Chaining it down to 4 clips coming off my chasis
3. laid wood under the carpet and screwed the box, amps, and everything to the wood, bolted the wood to the chasis, and used 90 degree fastners for the box
4. chained the head unit in the back to the chasis of the car

As you see I am very very very paranoid about my car. If anyone else has any tips then post em! Other wise you might want to try some of those tips i stated above