mmmm... Advans!!! Yummm!!!

Yeah, you can get a new siren... its usually just a 2 wire hook-up... positive and ground. www.parts-express.com has a few different ones... I know a bunch can be found on eBay... and any car stereo place should have replacements... I find a good place to put it is either under the fuse box in the engine compartment... or inside the front bumper. Hide the wirring too... make it look like a stock harness if it has to be in plain view.