heres my trick its for a vn but i dont see why not a vl
because im too pov to go and buy a decent $1000 alarm every time my cars not garaged especially in a shonky part of town i pop my hood and remove the main computer fuse (in my vn these are a box shaped fuse that cost like $20 - $30 to buy, so i make sure i dont loose it 2)
so now unless they happen to have 1 of these expensive fuses handy my car aint going no where

and thats the main thing i spose. id rather find it with my stezza ripped out and a bit of damage than not there at all.
ps. dont leave your locknut key in your car either
one last thing if i was to purchase an antitheft device it would definatley be a well placed gps tracker so i could find the ***** and get revenge