Put it on yourself takes about 1 hour, need 2 people and EASY AS HELL...

I put one on my 03.

Just need 2 drill puts, well 3 really:

One small one for a starter hole
One larger one the screws will fit in, and the 3rd one large enough for the wires...

I say get another person that way they can help hold it when you drill your first little holes to make sure it still going to right right so have them help hold spoiler over holes to make sure they line up okay and if not you still have a chance to do a little adjustment...

But its easy as hell... Hard part is the damn SPRINGS inside the trunk...

Also have some touchup paint so after you do the hole, clean it up the area, and put touchup paint in and around hole to avoide rust ever....

When done WASH your car, I didnt, and had rust all over paint for left over shavings... Most of it came off and its hard to see but I know its their and know right where to look,