If I get tons it'll probably be around 6 months minimum before they went under my rig. I'd fully re-build both, and do 35 spline axles, along with gears and lockers. I don't do stuff halfway.

 

Pirate 4x4 rules go to rockwells no baby steps you can handle it.

 

Go with the 14bff, my son ran Dana 60s on the rear of his 4Runner and broke them 3 times in about 6 years. He has been running the 14 for 4 years and no broken ring gears, or axles, or lockers, or bent tubes. If you are going to be going serious enough to go to Dana 60s go all the way.

 

i swear by the corp 14.. and they have been internally UNCHANGED in almost 40years i have a 2004 disc rear under my 81 shortbed and it was correct track, my detroit went in and even the front yolk slid right on off of an older 14 ... my point is gm never found a reason to change it......so you figure it out

 

All those axles are WAY overkill for 37s. Especially the rocks. 60s built the way I'll build them will be MORE than strong enough for what I need as well as having the clearance of a 44/9"(shaved housings anyone?)

 

understood^^^^ i have a 44/9" setup in the works for my XJ (at some point) but if he wants as failsafe as it gets overkill is still better than good enough