$5000 (usd) is too much for a 600 trail. If you want an X package just buy it to begin with. It will cost you alot more to make a trail into a X even if you find some of the parts used. Comparing the 2005 trail to the 2005X package = SC4 skid, piggy shocks, C46 rear shock, tunnel stiffener, riser, different handle bars, different brake, extro drivers, windshield&graphics, SDI engine, standard RER and a few more things. A dealer down the road just sold a 2005 X with low miles for $5100 and that had a 600 SDI engine.