Full tune up, check for any type of leaks, then I'd do headers and exhaust all the way back, bigger cam, bigger injectors, bigger throttle body, cold air intake, and fuel pump, if you really wanna go all out strongly consider changing up the converter and differential gears to get a very nice cam setup going on. Then nitrous, change the top end and bottom end, strip the car, oooops got a bit carried away thinking of the things I want to do to my 93 firebird haha.