Brian, I didn't think about the charge pipe problem (dragging or no room), but you are not understanding where the turbo connects.

The charge pipe from the turbo simply connects to the throttle body where your air intake (SL55 y-pipe) is now. In place of your CAI. See what I mean? Your air intake would be at the back of the car at the turbo inlet. The pressurized charge pipe connects to the stock throttle body. No changes to the SC, IC, manifolds, all stock.