You would be able to use either the OEM Exhaust manifolds (front is mod'd and pre-cat is removed in the process, rear is gutted), or the MSDS headers can be used for better performance (front header is mod'd as well).
R&D is done, it's just a matter of having them made.
With stock gutted manifolds with the front bank modified and this new and improved up pipe design @ 9psi on a fairly simple oval port 3L, he is now running
325FWHP & 326FWTQ