Start by building the motor to handle quite a bit of boost. Depending on how many miles you have on the motor, I would get a new motor to start building, it is gonna take some money, so I hope you have some. after you have built the motor to handle it, throw a turbo on there. Another reason I would build another motor instead of the one you have, is so you can keep driving your car around, and just build it out of the car. It will save you money in the long run, so you don't have to pull shit apart and put it back together a lot, since I am assuming this is your daily driver.