[7T2]

I was going to do it, but I waited too long and the seller scrapped the rear end. Didn't occur to me at the time, but I would have been going from a 10 bolt to a 12 bolt, so I probably would have had to change the yoke as well.

Sounds like a 3.08 is what I should be looking for. I might just swap gears. I've been reading up on it, and while it is a pretty precise procedure it doesn't seem too complicated if I take my time.