Might hate me for saying this but surely starting with a 2.0t would have made more sense.
From a brief search a company called "Storm Developments" seems to have made a turbo kit for a car in the past and numerous people have stuck superchargers on, probably find more info on Golf R32's as they have more of a 3.2 lump following, realistically budget a few grand and times it by two if not doing it yourself.