I have a used Whelen police strobe kit for sale it is model number csp690cccc, has a 90watt power supply, 6 outlets, and comes with 4 clear bulbs, but you can use 6, you will need to drill a 1in hole to mount these, they come with mounting screws, an i suggest siliconing them in to prevent moisture from getting in. 150.00 , same as in this link http://www.rimindustries.com/whelen/sp690cccc.htm