There are no tuners here who will defeat emissions devices. They prefer to stay in business.if you find a tuner keep it off the forums.
Think twice about putting a single exhaust manifold on your 04 without a head swap.the exhaust ports are different sizes and locations on the head. A banks revolver or other header with larger primaries might fit. But you'd need to buy the header and a late model intake/exhaust gasket to compare the ports