Just for future reference if I wanted to build one 
My personal ideas would be something along the lines of this:
Reverse light and headlight wig-wag (with switch to turn them off)
Hideaways in turn signals and reverse lights
Code 3 Intersectors on underside of mirrors
Whelen Ions in the rear doors
Federal Signal 650 siren in console storage (that thing you rest your elbow on)
Federal Signal Viper (2 head) in front windshield above rear-view mirror
Whelen Ions in grille
2 Federal Signal Viper (2 head)s in the rear deck.
Anything I could do better or anything to add? Anything that's discreet would be nice. I would just want to set this up so that I could have my nice car be a POV and not have it be too obvious from the outside or inside.
My personal ideas would be something along the lines of this:
Reverse light and headlight wig-wag (with switch to turn them off)
Hideaways in turn signals and reverse lights
Code 3 Intersectors on underside of mirrors
Whelen Ions in the rear doors
Federal Signal 650 siren in console storage (that thing you rest your elbow on)
Federal Signal Viper (2 head) in front windshield above rear-view mirror
Whelen Ions in grille
2 Federal Signal Viper (2 head)s in the rear deck.
Anything I could do better or anything to add? Anything that's discreet would be nice. I would just want to set this up so that I could have my nice car be a POV and not have it be too obvious from the outside or inside.