Rep Power: 812

There's no way around it. Yes you can protect what you have, but they'll just get pissed and ruin your car. Break windows, poke subs if they're bolted down, etc. This will sound bad but the best thing is to not have anything of value in your car, and leave everything open. The only ones that are gonna tri and "break in" are thieves anyway. And they will just open the door, trunk, look around, and leave. Your car will be fine because they won't have to damage anything to get inside. If they steal the whole car, there's insurance.