I have a 2007 KX450f main frame, but the engine cradle is cut out. I have about 8 feet of square tubing to replace the cradle, I was going to do a KX500AF, but I don't have time or money for it anymore. If you are interested in buying, I will sell for good price. I also have a mint condition seat, gas tank, front and rear break setups too. My email is elemeno187@yahoo.com. Let me know I can send pics