I found the headlights to be a complete pain in the ass to remove, get someone with small hands, I had my 12 year old to help me, they're held by 4 bolts which thread upwards, the inside ones are a nightmare to get to, I had to move out the radiator to get access. If you can take your time doing it, they can be done in a few hours, once out, cut a slot in the top of the bolts so that you can use a screwdriver to tighten and loosen them from the top, as Funkysi has said, when you do them you will see all the old air ducting for the original air box, I removed them and it leaves a nice space for the HID ballasts :thumbup1:
Edit.. I had my front bumper off to do this, think it might be in my build page also:thumbup1: