The tallest gear you could get is a 3.54 and that would work out good. Now changing the gears in a dana is something I would not attempt if I had no experience with one. Let someone with experience do it.
3.54 is the tallest common gear. Someone said Ford had a 3.21 a few years back. this is not a diY job, special tools to spread the case, press the bearing and measure gear clearance.