Cam up my 318, help me chose!

If your running on the street I would definitely go for a 3.23 gear. Your in middle ground there. I am running 3.55 gears with a 26 inch tire and I'm not very happy with the high rpm on the interstate. But if you drive highway or in the city 3.55 might be liveable. I'm going to a four speed with 2.76 rear gears for interstate cruising at 70. As I drive a lot on the interstate.