Iv not even got mine back from td yet and im already thinkin tdo5 based on friends testimonies, stage 2 is good for circa 320hp but i dont know what the safety range is for the engine like 20hp over, do you know what sort of boost would be required to make 320hp ? Around 1.3/4 bar ? Think tdo5's cantake around 1.7 1.8 bar not sure exactly
Make sure your injectirs can take it buddy