Right now, engine has new plugs and wires, the CAI is still in the garage waiting for my lazy ass to put it on. Also, I have Greddy EVO cat back exhaust (Sounds ****ing awesome!!!!). Am thinking of adding pulleys and headers, but I've seen mixed reviews on the HP gains.
Insofar as nitrous is concerned, I know that wet is better for forced induction and I'm planning a turbo at some point.