I have been searching around to find out what is exactly needed to make the Cefiro headlights fit a 99 maxima. People on NissanForums.com recomended to me to search here but I have been having trouble finding the information I need.

What exactly needs to be done to make these lights fit. Is it fender modifaction or just mounting the lights on the car?

 

I was the one that referred you here...I finally found a helpful link:
http://www.redlinemax.com/3/CefiroWriteup.htm

 

I should of got the cefiro lights they look so good.

 

to make them fit, you will have to cut off some brackets from your car to make them fit. they look good, but if you plan on putting your oem headlights back on, dont even count on it, its going to cost you.

 

The only lights worth installing are the genuine OEM Cefiros, all other have a crappy beam pattern. Somehow all the knockoffs have a glare that H4 bulbs should never have.