I ride a 01 800 LE. Its a freaking rocket, and handles pretty good on the trails as well. With proper setup and a good rider it will run with the best of the new sleds on the trails, and then go out on the lake and play with the big guys in the drags.
With studs, a little bit of clutch work, and a D and D power breather I am right with most stock thunder cats in 660 feet although they have me on top end.
Compared to your phazer they will be absolutely insane. When I get off my zr and jump on my 90 phazer it feels like the sled is dragging a truck behind it. Just no comparison on the power at all. Suspencion and handling will be a night and day difference as well.