Yes older versions have a 9006 bulb.
You can buy a HID kit, I recommend this one:
http://www.ddmtuning.com/products/DDM_35W_55W_Slim_Ballast_HID_Kit-101-0.html
The 35W H8 at either 4,500K to get close to OEM headlight color (4,300k) or 6,000K for a bluish tint (BMW HID look).
As far as I know, LED bulbs available do not put out enough light to be useful as main lights or fog lights. They might look nice and last forever, but don't throw the light far with the current products out there. Give it a few years and it should be an option.
Unless someone else has seem LED bulbs that put out more light than halogens or HIDs...
HID fogs was one of the best mods for me, it throws out so much light everywhere and works very well in conjunction with OEM HID headlights. Since they are fogs and aimed low, they do not produce glare for oncoming traffic, which is an issue with HID kits in OEM halogen lights.