I just added the Crimestopper Millennium Pager to my alarm...thing kicks ass. It's just a pager unit that you can wire into your existing alarm. They also make an LCD Pager Alarm system. Talked to a couple of guys, and they love them...you get about 3/4-1 mile range on the pager, and the remote for the alarm works ****ear 250ft away...If you're looking to run out and kick the crap outta someone who's messing with your truck, the paging alarm system is definately the way to go. Like yudruln said, Ungo, Viper and acouple others make paging alarms...Autopage and Alpine also do, but crimestopper is the only one with the LCD pager..as far as I know