here is the list i was given about the upgrades....

2002 Trek Fuel Aluminium Frame
Aluminium trailing arm
Cane Creek S6 Headset
Manitou Minute 1:00 front shock
Fow Float Shox rear shock
Full Shimano Deore XT drivetrain (crankset to hubs)
Shimano Deore rapid fire shifters
Mavic x3.1 UST disc brake wheelset
Avid Speed Dial 5 Brake levers
Avid BBDB hydraulic disc brakes
Bontrager crowbar handlebars