Best reply I can give is DON'T. Most turbo'd bikes spend very little time being ridden. They look good on the car park, but don't usually last long. You don't need low compression pistons if you run low boost pressures, below 5psi , I think. You will need a seperate turbo oil tank , pump, switches and warning lights/pressure gauge. You won't need an intercooler, but you will need a wastegate/dump valve, opens to relieve turbo pressure and exhaust gas flow through turbo. You will probably need a beefed up clutch and better brakes. You will also need a fat wallet and a bicycle for when you lose your license