So I’ll be installing a Powertrax locker in the front Dana 30 in the next week. I pulled the axles out and upon inspection I decided that I’ll replace the U joints with the spicer 5-760x u joints. I run 31s and plan to do so in the future. 33s tops. Is replacing the u joints enough? Will the stock shafts suffice? Or should I be looking to chromoly axles since I’m at this point? I moderate wheeling. Don’t want to drop $600 on axles if not necessary.