Sure its great but people would hate on you soo bad. Besides, if i was gonna put a motor in any frame idk if it would be a banshee, their notorious for not having the greatest trail frames. They're more of a dune bike. (again, not trying to start a fight, thats just what i've heard).
And no I'm not hating on them because my dad had one (bone stock) and he said it would do 95 in the dirt. (he was clocked by my uncle dana.)