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






2005 Ford F150 SuperCab FX4 1964 Chevrolet Impala SS 1998 CSVT: 354HP/328TQ @ 10 psi, now gone