No harder to do than any other axle but you will need to swap the differential case also. It is a different size 4.10 ratio and higher, (lower numerically, i.e. 3.55). You won't be really pleased pulling much weight with a 3.55 ratio; 3.73 is marginal, especially with the trans your truck has.My 93 f350 has a 410 rear gears and I was wanting to put 355 in diff
How hard will that be?