[Stealthee]

I suggest you do a lot of research on this. 91STT has basically hit the nail on the head. If you want 600hp you have the wrong model. You are much further ahead purchasing a VR4. It gives you the AWD and the stronger engine from the factory.

For 600 hp you can go stick with TD04 and max out some 19Ts, or check out the newer DR750's from Dynamic Racing. Matt knows his turbos. He currently owns the world record for the fastest 3s in the world. The DR750's aren't cheap, but they are bolt on, and only require the supporting fuel mods, etc.

The other option is upgrade to TD05 and go with 16G's.

I don't know how much you have saved, but be prepared to spend at least $5000 just on turbos and supporting mods to hit your 600 hp goal. Once you start getting that high in hp you are getting closer to the threshold of the engine. People have had stock engines hold over that power, but its all about a good tune.

As for your want of torque, if you want torque get a diesel. These cars never were and never will be torque monsters. They are going to always have more horsepower than torque. Most of the 600 whp VR4's make around 520 ft lb tq.