Get a TST PowerMaxCR and be done with it.
GAUGES FIRST! DO NOT UPRATE POWER WITHOUT THEM!!
A performance air filter will only help after power increases have been made. Adding a high-flow intake to a stock engine is putting lipstick on a pig. No power increase to be had.
By the way-- WELCOME TO TDR! I trust that this website and owner's club will become one of your favorite internet hangouts, and that all your questions will be answered to your satisfaction.
Feel free to send PMs (private messages) if you have more questions.
Capt H