I opted for a kill switch myself and leave nothing of value in my YJ. But if you want to install an alarm system make sure it is one with the absolute loudest siren(s) (Ones that can make your ears bleed) installed on the inside of the Jeep.
"Taking care of our veterans is a cost of war. If you can spend six trillion dollars sending people to war, you can spend a few billion dollars taking care of them when they come home"
Sen. Bernie Sanders (I-Vt.)
If what doesn't kill you, makes you stronger, I should be able to bench press a Grand Cherokee by now!