The foundation for a 5.7 Swap

and here I was content running the stock pcm, and you guys have just about talked me into a MS3. I can build it all myself, as I repair medical equipment for a living. I have access to just about any factory part made after 2002, and would not mind retrofitting coil drivers if the bosch coil drivers are a factory part I can get them for little cost. I had ruled out aftermarket efi (such as fast ect) due to cost, and the fact that I have a completer ram for my swap so I really have everything needed, but since I'm installing a twin turbo setup, I would like to have more control than what I can pay to have done via diablo. So if you guys can tell me where to find the factory parts I need to source, I will jump on board with the MS3