Fenders
 

I want z3 fenders for my car,,,, is it worth it to get the carbon fiber ones, i don't think it saves that much weight....does it??

Damn, you plan on dropping some serious cash on your car, don't you?
You won't notice a difference in weight between carbon fiber fenders and fiberglass ones. And since it's being painted (I'm assuming) the extra money is not worth it.
Now, in my personal preference Z3 fenders are tacky and over-done. If I had the cash, I would get rolled / flaired fenders instead. That, of course, is just my personal opinion.

Well do you have any links/ pics that i could see, maby I'll go a little diff???