I went to the dealers expo in Indianapolis this weekend and talked to jim from Bipolar Racing.He gave me a coule of hp tips for the xtz. We don't need them yet but someone will come up with something that will beat these things sooner or later. He said you can use the efi units from the 700 xt and put one on each cylinder of the XTZ and bump the horsepower up 25 ponies. He says it is a plug and play upgrade, and 25 horses is a heck of an improvement. What do you think Glamis? Oh ya and Dragonfire has an awsome long travel kit made from chrome moly now .