Hello, recently I have been upgrading my 2002 yeti kokopelli. It was purchased years ago from supergo and came with some budget parts. When I first got it the only things that I changed were the bars (easton ec70 flat), put bar ends on, and put Delta brake extenders on. Recently I have put a Thomson stem and seat post on, a Salsa quick release seat post clamp, WTB rocket saddle, Avid Ti brake levers, and an XT front derailler. I am considering putting on a Chris King headset, XT shifter pods, and converting to mechanical disk. My questions are do you think that they are a worthwhile upgrade. My current parts are an aheadset cane creek headset, deore shifter pods, and Avid 3 V brakes with Bontrager Select wheels. I noticed when I put on the derailler that it shifted smoother and was less noisy then the LX on that was on it before. The LX was even ajusted by my LBS. I did the XT, maybe I spent more time and love on it to adjust it properly since it was the first time I did this kind of a job. But maybe the XTs are just that better built. Watcha think? The headset that I have does not even appear to be built by cane creek because it says built for them by IP or LP. Plus when I took the stem off I regreased the headset and it appeared to have worn a bit. Is the King that much better then say a Cane Creek s-8?Also I plan to purchase Avid BB7s and XT & Mavic 717 wheelset. Watcha think?