2.76 vs 3.23 vs 3.55

Abodybomber said
My choice,without converter change,3:23 gears should tickle your fancy..

8 1/4 will be 3.21. Add a sure grip while you are at it. With your tires, that would be what I would choose. I doubt you'll notice any big acceleration gains going to 3.55 but it will cost you more mpg.