Originally Posted by Spec R

Jimmi jammers for anti slim jim
hood cable relocate to engine bay
hood latch block off plate
mod power door lock switches so they only lock
fuel cut off switch on the GROUND side of the wiring

security bolts/screws for your ecu
modify wiring into ignition and into ecu so that its difficult to remove from their respective plugs (hard to explain on the interweb, its a technique that good installers know)
backup battery from your alarm
install the main alarm brain behind the driver side rear passenger panel
install a dummy alarm brain under the dash
install siren under the fender

theres tons of more "tricks" out there. anything to "delay" or "challenge" the would-be thief into giving up or taking more time for him to be exposed is the name of the game. in the end, since its a type-r, the thieves would probably go straight to wear you keep your keys and just drive off with your car or go with a tow-truck, or both