I second the intake and X pipe. Both will shift the power to a higher rpm and make more top end power.
Can I assume you've bumped the timing? Shorty headers are also a good mod for the '93. (More gains than you would get on a later '94-95 5.0). If you are going to keep the car mostly stock, get the MAF bored to 60mm. It's good for about 5 hp at higher rpm. If you are panning to do more serious mods later, skip that and just wait and buy a good 80mm Mass Air later when you do the rest of the mods.