1. retaining the nt harness - the nt harness can be completely retained and only needs the addition of some wiring to become the equivalent of the turbo wiring harness.
what you'll need to wire in:
7th wire from mas - the 7th wire from the mas needs to be run back to pin number 6
knock sensor - one wire can be grounded to the engine bay somehow, the other white wire needs to be run back to pin number 9 on the ecu.
wastegate solenoid - one wire here will be grounded, the other returns to the ecu at pin number 105
injector resistance pack - this is the most dificult. i'll let the following pictures describe it rather than trying to explain it in text. if you have any questions just ask.
thanks to don over at aialmatrix for getting mine to run and making this great diagram.
here's a link to my imagestation account where i have the factory ecu prints. the highlighted ones need added, and the model is in the upper corner so you don't get confused.
http://www.imagestation.com/album/?id=4291950155
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But its running very rich, its giving plenty of fuel when on boost but seems to be giving the same amount off boost to the point i have to ease the throttle on to prevent from flooding the engine with fuel and you can smell raw fuel in the car so bad you gotta keep windows open, even when its raining 
that is so helpful thank you very much woot! afm/maf same thing right? i'm running an n/a maf with turbo injecters and ecu hence the overfueling i think.