maybe you can give a little more info about this sled...... Seeing that it was a rental did you buy it stock then do the turbo, Air Frames, etc afterwards or have these mods been on this sled longer then that? 4,600 miles is a ton for one season..... A lot more then just the engine and chaincase wear out after that many miles. Have clutches been replaced, balanced, or repared? How is the suspension? 14K???