1. Are you looking for 48" one piece interior lightbars for the front windshields of these vehicles? Most people use a split visor light for the front windshields. 2. Do you know the model years of the vehicles? 3. Are the multi tone sirens mounted into 16 of the vehicles that are also getting the windshield lights? 4. Do you want a console mounted siren controller? 5. Do you need a speaker to go with them as well?