Americanmuscle.com has a sweet HID conversion kit. Not that cheap for $280, but it allows you to have high beams which most kits don't. They also have a kit to convert your foglights as will for $219. To give your lights a matching look.
__________________ 03 Zinc Yellow GT. Mods to date: JLT Cai, Holly 75mm TB, Trick Flow upper plenum, IAC restricter plate, Steeda UDP's, Timing Adjuster set at 15 degrees initial, fully adjustable clutch cable kit, Spec stage 2 clutch, MGW shifter, BBK o/r X pipe, SLP LM1 catback, FRPP 3.73, FRPP rear end girdle, 275/40/ZR17 rear and stock sized fronts, Diablosport 91 octane tune.
Mods to come... Maximum Motorsports full length subframe connectors, custom SCT dyno tune | 
Best HID light conversion for 04 Stang 
