shop local has a totaled foreman 500 with factory front disc brakes, my question is this, has anyone done or know if it can be done, swapping the front brakes and all from the foreman 500 to my 2000 foreman 450es?

looks close from what i can see, but i thought i would ask before i get this stuff from him

 

No I don't beleive that it would work, I have 02 500 rubicon and looked at doing the same thing and found that the a arms are the same but a 450 I believe is way different.
Have you looked into High Lifters front brake kit, I want to put that on mine, thinking of sellen my stock brakes on ebay that maybe a option for you.