You will have to be patient. It took me 4 years to find a K's Aero bumper for a reasonable price. Most of the time they are located in California and the seller refuses to ship. Because lets face it, if the seller lives in California, then they really don't need to ship the item they are selling in order to sell it. If you get extra lucky, you can find a mint one like I did.... but like I said, I waited and waited until the right one came along:
http://broadfield.wordpress.com/cate...-s13/exterior/