I've read some things about fenders and flares but I'm not an expert by any means.
It's gonna depend on how much you wanna drop on it. This website basically gives you all of your possibilities.
If you don't wanna drop that type of money, then its gonna be a DIY or hopefully you'll get lucky and someone near one will piece one out (highly unlikely but all a possibility). I know I can go down to Mexico with a picture and get one built for about $400. I'd imagine it would be even cheaper if you did it yourself.
For the flares, I've only seen them on one WJ and that's because you have to cut the metal on the panels. It sort of pushes people away from attempting that job.
RIP 12/20/2013: 2000 Green WJ
Now driving a 7.3L Powerstroke F-250. 5 speed with 4x4.
Always on the look-out for another Jeep.