I think you could fit just about any 1" carbon fork to that bike - You'll need a new headset and stem to go with the threadless stuff - the plan would be for a better ride and about a pound or so weight reduction. There's been a guy on eBay recently selling Columbus Carve forks for $85...I know because I just bought one for $120 from the LBS and thought I was getting a really good deal. It's an okay fork, maybe a little stiffer than the good ones from reynolds and look -

yeah, twist the d-ring to go between friction and indexed...