I have a bone stock 06 banshee

what do you recommend first on upgrading for power? obviously airbox and exhaust, but what should I get?

also, I want to get a general Idea on what a full suspension setup would cost
a-arms, extended swing arm? shocks with reservoirs?


I have started a lot of desert trail riding, with occasionally going to imperial dunes a few times during the season

thanks for any suggestions!