Yeah, I wasn't trying to put you off asking, but ECU choice alone: PowerFC, Haltech, Motec, NisTune, Vipec, Wolf, Emanage, and so on, let alone when you throw tuners into the equation.
Most of the workshops listed in the thread will easily handle a turbo conversion, some I would use, some I wouldn't, but listing them publically always leads to fights. Feel free to PM a few people who's opinions you trust and ask them, that will cut out much of the rubbish