yes. get a 2009-2012 crf 450 front fender, and it will line up. you will be able to use the rear holes in the fender for the front holes in the clamps. you will then have to drill two more for the rear holes in the clamp.
for the number plate, go with a cycra stadium for a 2009-2012. since the bottom of the number plate zip-ties to the forks with that plate, it helps keep it secure. you can secure the top part of the plate with a few zip ties running to the center bolt in your clamp that was used to hold your 02' plate on. i can post a pic of how i did it tomorrow