not sure
Well mine came with the VIP installed. But i can tell you i really like it alot. It is because of the VIP that i have not yet added an aftermarket alarm system. Infact, a local car audio shop here does all the work for the local Toyota dealership. They said for $199 they will upgrade my VIP, using the same key clicker thingand it will just be getting the vibration and movement alarm add ons. But i love it as is also. I think you will like it, but not having it, you may find it cheaper and better to just go completely after market.