I bought the brake kit used from Ebay from a dude for $600 shipped. You will have to get 4.6 rotors if you pick up 4.6 calipers. The rotors are slightly bigger and thicker. By the way dual piston calipers up front!

Rasta, they are 20" with a staggered set up!

Here's those closer pics of my rims:
http://www.xoutpost.com/userpage-user13260.html