I sold my brother a '94 Mach 1, it's a 670. Bought an '03 800 REV (the Blair Morgan mentioned below). We ran them, I thought I had smoked the 670 with my 800. When I turned my head to see just how bad I beat him, he was just within about 30 yards of me. Both sleds stock. This either says a whole lot about the 670, or not too much about the 800. My opinion since I owned both, they are both wicked fast and a blast to ride. One of the reasons that I now am partial to "The Doo's". Love torque and speed!!
