I sell the Whelen brand of strobes which is the exact company that goes in most emergency/rescue/police vehicles...They are the real deal not some cheap Autozone strobes that will only last a couple months and don't stay in sequence...These strobes are very fast, bright and stay in sequence! You could get the 2 bulb kit for the rear, not sure if you have to have a control box(probably do), but I know in order to make them come on as the reverse lights, you must diode isolate them to make it work. I can find out exactly what needs to be done, If you want the real deal and want the quality you will probably spend around 250 installed for this if installed by a professional and done right. I can get exact prices tomorrow, also check some internet sites, I am sure there is some wholesale house somewhere that sells this stuff cheap!
-1998 BMW 540i6(Axis Penta 20's,M5 shadow grilles,trunk lip,led tails,oem front lip,PIAA lighting)
-2002 Cadillac Escalade(Zinik Luina 22's,OEM HID upgrade)