93 is a good year. I've has three so far and still have two-ish.
As for mods, start with the basics of Intake, exhaust, 180* t-stat, plugs and wires if they need it. Do a tune up as well when you get it. Once you have the basic mods, Jet Performance makes a Chip for the 93 and you can drop to a 2.2 pulley then. If you go straight to the pulley you run the risk of breaking something. A scan tool is also not a bad thing to get, although could be pricey.
Good luck with the 93. Let me know if you need any parts as my 2nd 93 is a parts car.
2007 Saturn Aura XR | 1970 Chevy Blazer 4x4 | 1970 GMC 3/4 Suburban 4x4