Yeah, I replaced the stock fork with an Easton EC30 carbon fork that I bought from Nashbar. I never really liked the feel of the steel fork, plus it was a$$-ugly, in my opinion. There is definately a difference in handling and ride quality. The fork really soaks up pavement joints -- it makes the whole ride feel smoother. The difference really is night-and-day. I was a bit concerned about the effects on handling, since the original fork had a rake of 28mm, and the Easton has a 43mm rake. This effectively reduced the trail by 15.6mm, which theoretically should make the handling less stable. Although, I haven't noticed any reduction in the stability, and in fact it feels more "precise" in its handling than it did before.

I also replaced the stock pedals with Time ATAC Aliums, I installed a shorter stem (90mm) and replaced the stock saddle with my old WTB Podium saddle. I also added some nice 4mm thick keirin grips. I thought the gearing was a bit low for the velodrome, so I replaced the cheapo 16t cog with a 15t Dura Ace. I removed a couple links from the chain, which reduced my wheelbase by a bit.

A note about the wheels: I kept popping spokes on the rear wheel of my '05 Pista. Curiously enough, the spokes broke right at the threaded end, and not at the head, which apparently is a sign of weak spokes. I had the entire rear wheel rebuilt with Wheelsmith 14ga. spokes. The guy who rebuilt my wheel has an '04 Pista, with the same spokes, weighs about 235 lbs, and has never had any problems. So, maybe mine were just built from a bad batch. Anyway, I would still consider upgrading the wheels in the future.