What is your daily commute like? If it's a lot of highway miles, then simple aero mods will help (ie front grill block, side mirror deletes if legal in your state, rear wheel skirts, under belly tray). Or if your commute is a lot of city driving, further weight reduction (remove passenger and rear seats if you want to).
Here's another civic of your generation with some really nice looking aeromods.
http://ecomodder.com/forum/showthrea...mods-7702.html