My opinion, I would think TURBO. If I could afford it, everyone of my goddamn bikes and vehicles would have a turbo. I am trying to put together a turbo system for my '82 Katana dragbike, It will happen. My Busa will be paid off in 2 years. I am thinking, instead of buying another new bike, hmmmmmm thinking 'bout a DUKE, Would kill for an MV-F4, maybe another Busa, etc., maybe I should just turbo the 'happy-bus'. As far as I know, no one I Canada has done a Turbo charged 'Busa?????????????? Or am I wrong? I know the fastest street-bilke in Canada is a NOS Busa. From Ontario. Hmmmmmmmm..............