First question is why would you want to change the fenders anyway? They are the same except for the marker light on the bumper.
If you are trying to change the headlites they are a direct bolt on so you wouldn't have to do that. I have been doing alot of research on the car via the web to find out exactly what I can and can't do to it.
Well, timne to introduce myself to another site. My name is Mike and I have owned my P5 since August 18, 2001. I have about 5,000 miles on the car so far. Mods done to it are a custom CAI (which I HAD pictured on other sites), Full stereo system (AMP, Front seperates, rear co-axles, sub which I have to build the fiberglass enclosure), alarm with auto start (stick, yes it can be done on a mazda without a problem), tint, and I have order the Racingbeat springs. I am presently in the process of getting ready to put JDM cams in the car (money is a big problem).
After several problems with other boards, I have decided to put up a yahoo group (Haven't had the best of luck getting users and postings because I'm not going to put selling tactics to get people on).
If you have a question on the electronics of the car, don't hesitate to ask and I will try to answer.
Mike
http://groups.yahoo.com/group/mazda_protege5