[sprint_9]

3.42 or 3.73 are your options in that range, there is no 3.55. I just bought a ring and pinion for mine. You can get a 3.55 for car 12 bolts, but not the truck 12 bolt, this is atleast what I found.

I went with a 3.73 for more get up and go over the 3.42. I guess in my case the small amount of mileage gain wasnt worth it for me on a fun weekend cruiser, I want this thing to move quickly.