I found a 2008 kx450f at a local shop that iv trusted for years. The guy at the shop said the bikes been raced, but he put a fresh piston and rings in it and said everything elts looked good when he had it apart. The shop owner also told me that he new the previous owner, and said he was a slow racer and didn't race the bike hard. The thing that bothers me, is the plastics are beat to crap. Lots of scrapes and white marks from being bent, but for the most part the bikes in good clean shape engine looks good, frames got a couple dings, etc. I guess I'm just scared that since the plastics are in such rough shape, maybe he didn't take care of it. I'm going to buy all new plastics, graphics, and bars to make it look good. The shops asking 3645 out the door. Should I buy??? Thanks for any help.