stock cylinder banshees can be made really fast adn reliable,.
no matter what 450's are time bombs they are ready to blow at any minute over the 65hp mark i dont care what you guys say they are piles of shit ( in my opinion) for drag racing the thing that makes them seem fast IS the broad powerband they somewhat have and the high rpm mark they are capable of hitting the bike as a whole is much lighter than a banshee also.
to handle a mighty motor inthe trails 80+hp and high tq, you will need a lot of proper suspension and a lot of respect for it.. my personal trail bike is a 421 stock cylinder alky 4 mill and its a blast in the trails, dunes. but drag racing the swingarm is just not nearly long enough its about the same as a -1 on std banshee frame. it wheelies like crazy..
just go race the dude..