Few things.
It is fed from both exhaust banks. The obvious indication being that the turbine outlet goes right into the exhaust midpipe. If the front bank didn't go into the turbo...where would that exhaust go! I think the "y-pipe" mentioned is before the turbo.
It will only have an air to water intercooler with the heat exchanger up front on the radiator. The "intercooler" piping listed in the stage 1 is a misprint.
They already did a twin turbo 6, with air to air. So they do have experience with the platform. But the tuning has been the problem. Unichip isn't coming through quick enough and SCT is dragging it feet to even start the project.
These are the same guys that did the headers for the 6 that were mentioned on this forum some months back, where some Contour guys were thinkin about seeing if they would fit. They have been great to our community, but they seem to be lagging on actually getting things done. My personal opinion is because they've taken on too many projects at once. Headers for both V6 and I4, motor mounts, and now this. Plus, the 6 isn't the only car they are making products for.
To answer Sigma's question, I don't think you need anything else. There are obviously drivetrain considerations to think of, but save for a clutch and flywheel, there isn't anything out there for our cars yet anyway.
