The basic kit for a turbo for the street is a "ghetto kit" as these guys call it
Depends on how much power you want to make now or in the future?
The power output goes from around 250bhp upwards to say 500 bhp for the street.
Keeping it real for street use without too much hard work running it ?... I`d say around 250 to 300 bhp would be about right.
Once you have done all the engine work you`ll no doubt want to do other things like upgrade the brakes, upgrade the clutch,
change the wheelbase, lower the bike etc.
It all revolves around bucks !! With an exponential increase of bucks to power !!!