its a lot of money for not much gain.
with out pistons camrod ect you will only be able to run 6lb of boost max, with is not worth the hassle or money in my point of view. If you talk to a garage who knows there stuff and a true conversion will be about £6500 and will be able to run 1.7 bar of boost and 350+ bhp and some good torque.
Please be very carful as anthing more than 6lb of boost and the engin will go bang.
but dont let me put you off, i am still looking in to a cheaper way of turboing my car.