ari thanks man!!!thta grand...sum td04s are costing a bomb to build!!!I'd go onto scoobynet and get a td04 they are way cheaper.
Wastegates go for tial, turbosmart, sard, blitz, trust etc.
You need to check the flange and make sure it matches up to the manifold you have as some are square and some are diamond.
Zisco do one by a company called z sports. But I don't know what they are like!