Higher flowing exhaust (header with presilencer replacing all catalytic converters, stock cat back). Reduced intake restriction with F&N filter (though possible less shielded from heat). 6 port sleeves (better flow through the 5th and 6th ports which open at ~3800rpm). Turbo exhaust sleeves (better flow). AC delete. Emissions delete. Other minor weight reduction (stock weight is 3003, I'm at about 2850 with 1/4 tank gas).
Power steering delete possibly. LED headlights and tail lights. Replace stock cat back with racing beat model. Synthetic tranny and dif oil. More weight reduction. Custom heat shielding for intake. Tune with custom ECU.