oh, another problem you will run into when running a turbo on a single cylinder motor, the exhaust pulses, on a 3 or higher cylnder engine the exhaust pulses are alot smoother, on a single the exhaust pulse hammers the impeller. this increase wear on the thrust bearings. not a problem with a ball bearing turbo, but as far as i know no one makes that small of a BB center housing for turbos.