Brian Sturgeon made it very clear at the race school that the 440 is a snoX only sled. If you take it out on a lake and pin it, she'll melt. Marginal cooling system for snoX only, 110 heads, and an ignition advance rate that makes for big giggles........'till it melts a piston.
Kits were to become available that allowed the sled to be used as a terrian racer. Bigger coolers, low comp heads, and ignition.
Might still be some left at the factory. Cross country guys went away pissed.......leaving the sled behind. If you get one, there are some important updates.