From what his asked it looks like his looking at buying a 33 that was a N/a and is now a turbo
All up your better off buying a factory turbo
The non turbo shell would need to have upgraded brakes, dif etc to be legal as the non turbo brakes are too small
Also if its a non turbo engine then it is not made for boosting, it can be done but theres more chance of something going pop if it isnt done properly with correct safety measures
So basically as above ... buy a factory turbo model instead to save possible headaches down the track