there's two ways to do exhaust:

1. headers (that's all you would need here).

2. PLOG (or ported manifolds), 3" down pipe and a Ubend delete.

Headers are the best way to go. Besides that you'll need, 180F tstat, PCM tune, air intake and colder plugs (PCM, 3.4 pulley and colder plugs are supposed to be installed at the same time).