S'cuse me- I hit "Post" before I was done...
I was going to suggest 3.23s or 3.55s. Maybe 3.73s if you REALLY don't intend to do any highway driving. You didn't mention your transmission, so this is assuming a non-overdrive trans with a 1:1 final drive. If you're running some type of overdrive, feel free to dive into deeper gears.