I just won a '94 FSM on Ebay. I was wondering if anyone could give me a good idea of what I'm missing out by not getting a '93. I know the computer codes will be different and the lack of AIV. But what else?

93-94 are the same car with the lights in the rear changed and i believed that is all that has changed. engine i believe has the low port and some 94's have the high port depending on production date

But that's the only differences right?

The engine and ECU are different. The A/C system is also R134a instead of R12 like you have now. Other than that, they are the same.