96 gsr shouldn't be too tough for a 5th gen prelude. You should easily win that.
Considering the v2, intake mani, and exhuast, it'll be more even.
At this point, it's really up to the driver I think. Chances are he'll win, becuase he's had his car longer, has put more work into it, and probably is more familiar with it.
Anyways, a stock gsr could beet you if you havn't mastered the prelude yet.
Good luck sir.