I have a lot into the axles. It's one of those things where just assume its gonna cost a small fortune to run 40s comfortably. Rear axle was the cheapest. 100$ for the axle and about 1200$ for all the goodys. The front was 750$ and about 1800$ for all the goodys. And I'm not even close to being done on the front axle still need. Need a locker, 35 spline stub shafts, u joints, warn hubs. Then it should be completed. That's a other 1000-1300 for the front.
1999 jeep tj 4.0 custom longarm 40 mtr/k
1998 jeep tj 5.3 daily driver 2.5" lift. 37s highline