The engine responds to the same mods a banshee does... higher compression, better pipes, bigger carb and better air filter. The major drawback is the clutch. There is naturally alot more slip in the auto clutch and so wheely's for the most part are out of the question.
That being said, there are also clutch mods you can make rather affordably to improve when and how the clutch hooks up.
I have a Trailblazer 250. It starts in the worst weather and has a chushy ride, and they are a blast in the snow But I'd never get one instead of my Banshee.