i run 4.10 in mine.its in the lower 12's and shifts into od b4 the 1000 ft mark.maybe it will break and give me an excuse to install my th350.

 

Pretty sure 2500 is what I run on the freeway, and I have 3.73s. My buddies mustang has 4.10s and don't know the exact OD ratio, but I think he cruises just a tad over 3 grand... which to me is just a bit over the top for an automatic. If it's strictly race only then I suppose it's right up your alley. But if you like to cruise... then you can't go wrong with the lower gear ratio!