ACK
Ok, some enlightenment here.
1999 had 2 XCR 440's. The one in a Gen II chassis and the first year of the Edge chassis. In 2000 there was the XC 440 SP, then in 2001 there was the Pro-X 440. In 2002 there is a revised Pro-X 440.
Now, none of these are trail sleds. yes, the Pro-X needs 110 fuel and you may have to mix with oil, but if you change the timing and shim your heads, you can use normal fuel, and mixing oil isn't a big deal at all.
Ok, the liquids are fastest. Period, the best all around sled would be the Pro-X 440 cuz.. IT'S NEWER.
"Might Be Crazy But I Ain't Dumb" - Cooter