I have too put a turbo to 3.2 and would say that a small boost you can get it driveable just ignition and lambda adjusts - it may not be such shape that you can sell it but should get smile your face. I have now had 3 years 3.2 with turbo and still tune is not good, it can be driven and is quite fast (3.3sec 0-100kmh) but part throttle is jumpy. There is also great risk to break something so you should have some else daily transportation and plan that what to do when your golf needs a new engine.
i have two other vehicles, i isnt a jump and bang im done. r32 turbo will be a toy car.
i basically based my list of parts on the hpa dtm 350 kit.
please share what your build constited of or post a build thread