Siren Location, G2 Integra

hi all!  i have a quick question but first i wanted to say i think this is a great site and there's a lot of informative topics and helpful people.  an old thread here helped me out with a problem installing my Avital alarm.  unfortuantely, i can find no answers to the following question, although it is more preferential than technical in nature.

as i said, i am in the middle of installing my Avital 2200.  it's going into a 90 Integra sedan.  i am looking for an inconspicuous place to mount the siren that a thief would not be able to easily disable it.  the car previously had an alarm and the old siren is mounted in the engine compartment on the firewall (that is my decoy ;-) ).  i tried inside the fender liner, under the battery tray, next to the fuel filter, but the siren is too big to mount in any of those locations.  anyone who has worked a Honda/Acura knows how tight components are packed into these vehicles.  i am just trolling for creative ideas on where to mount this thing.  is it safe to mount it under the car (obviously away from the exhaust and fuel system)???  what types of places do multi-siren systems hide their sirens?

thanks!