NO.. I own a 92' and have flow tested them myself a while back when I was diagnosing a power problem. They ARE 270cc stock injectors for every year. Even the 89-90 had 270cc injectors. They were top feed instead of side feed. please STOP talking out your ass.
IF you were to put larger injectors in your car, how would the ECU know that you did so? Magic? NO.. the ECU still thinks it's using 270's. SO, it keeps the same injector pulse width with the same quantity of metered air, but b/c you have a much larger injector, it flows FAR more fuel than the stock injector for the same pulse width (or the time the injectors is open for u) . Now your car is a rich pig, and you dump so much fuel you can't even get it to idle.
To the topic starter, I would recommend getting your KA checked out. If it's healthy, go for it. It'll produce more power for the same money an SR would cost. Just do your research.