I'm pretty sure those cars have a conventional return style fuel system. Assuming that is the case, a regular 255 in tank pump will be fine. A focus pump would work OK too. As for injectors, 39lb cobra injectors (USCAR plug) or 42lb lightning (bosch plug) would probably be the easiest to drop in it. The lightning MAF will work, but being a twin turbo, I assume it will have to be in a blow through config, and I don't recommend using that style MAF in a blow through config. The best solution is to get a SCT5000 or PMAS HPX tonsil style sensor and bung, and weld it directly into a charge pipe. This doesn't have the troublesome couplers, and won't change readings if it is removed and reinstalled. If you do the injector/MAF combo above, the simplest solution to make it run correctly is get a dyno tune. I can provide the service for a flat rate fee, or the shop/tuner of your choice. I doubt a drop in tune will work for this setup. It will need some hands on work.

Brian
EFI-Unlimited