Last night I received my DDM Tuning Raptor HID Kit. Just finished putting it in. These are the steps that I used to complete the process.
Covered in this DIY are the following:
-02-06 Altima Front Bumper removal
-02-06 Altima Headlight Removal
-DDM Tuning HID Install Step-by-Step
Tools Needed
-Flathead Screwdriver
-Phillips head Screwdriver
-Ratchet Screwdriver (optional)
-10mm Socket
-Ratchet + 3 or 6" Extension
-Dremel or other rotary cutting tool
-7/16" or 1/2" Drill bit and drill
-Electrical Tape (optional)
-Extra set of hands (not necessary, but could help)
-OEM HID Dustcaps (optional, or non-HID also optional)
Front Bumper Removal
Go ahead and grab your Phillips head and ratchet with 10mm socket. On the underside of the bumper you will see 4 black Phillips head screws like below (1st picture) and 5 10mm bolts securing the bumper (2nd picture). Remove all 9 and put them somewhere safe. You'll need them in just a little while.
Next, grab your Ratchet Screwdriver with a Phillips head bit.
If you do not have one you must find a Phillips head screwdriver that is not more that ~4" long. Otherwise you will need to remove your tire for this step. You'll need to turn your wheels all the way in the opposite direction of the side you're on (ex. passenger side screw turn wheels to left). This allows enough room for your screwdriver to get in there.
Remove the 1 screw that's where I'm pointing in this picture.

Removing this will enable you to peel back the wheel well enough so that you may remove the next 2 bolts.
You'll need the ratchet for this. The first bolt is just behind the wheel well liner and isn't hard to get to (shown).

The 2nd one, however, isn't that easy. You must pull back the liner a little farther and the bolt is located about 3/4 the way to the headlight. Follow the body gap between the top of the bumper and the fender. It's silver in color.
Repeat for opposite side.
Next pop your hood and remove the plastic tabs on the top of the bumper and the top of the grille. The tabs on the grille are not pictured but are easily seen.


After removing all the tabs (6 total) the bumper is ready to come off. The only thing holding it in now is 1 spot under each headlight. I stood in front of the car with 1 hand reaching to the wheel well and the other hand just below the license plate and pulled straight out. It might take some force but you should not break it.
This is where having an extra set of hands helps because the bumper isn't exactly tiny. Place the bumper somewhere as to not get scratched up.
End of Front Bumper Removal DIY
Headlight Removal
All you'll need for this is your 10mm socket. There are 4 bolts securing the headlights. 2 on top, 1 on the side, and 1 in front.
top

front

After taking all 4 out pull straight out with the light. There will be a little resistance because of a clip. The light will only go so far before you need to take out the bulbs or remove the plugs. I found it easier to remove the plugs to the bulbs therefore I didn't need to worry about my fingers touching the bulbs.
End Headlight Removal