You will not need bigger injectors- the computer controls the pulse-width (amount of time the injector is open) according to oxygen sensor readings- bigger injectors will do nothing for you.The computer will have new higher flow fuel injectors open for a shorter amount of time than your stock ones to spray the exact same amount of fuel, it will run exactly the same, except your new injectors will likely prove to be less durable than the factory injectors. This is like the myths that cars run better on premium fuel, and a bigger cfm carburetor is better- it all depends on the car. Like I said- you can put a header and exhaust on it, but it will only feel better in the top end if at all, it will be worse off the line, and you will have to listen to it drone at cruise. Take my word for it- these things you are contemplating are a waste of $$$- I would do apperance and handling items only, plus a fat audio system- these are items you will appreciate the most and will not be a waste of money like engine mods on a car that will never make any power.