If you want it "off it's face" as you say... start by finding a good engine builder and tell him what you want. Get a complete engine built top to bottom specifically for your goals. While that is happening decide on your turbo gear and your drive line. When the engine is done install it and the ECU. Now it's just a matter of installing the turbo gear and getting it run in and tuned.
1, The snort stage 4 manifold has a multifit flange T3/T4, so I would go with that.
2, ECU is dependent on what features you want the ECU to control (inputs and outputs) and also how you are going to setup your injection (batch or sequential) and spark (single coil, coil pack or sequential spark/coil on plug)
3, Injectors are picked according to what your power goals are, there are many calculators around the net. We have discussed a few of them on here before.
This thread comes to mind:
http://boostedfalcon.net/viewtopic.php?f=18&t=148You have a lot of thinking, planning and deciding to do before you spend another cent IMO.