i've seen a few jeeps with 302's in them. advanced adapters has what you need to do the swap. of coarse a set of dana 44's would need to go under the frame. but if you watch Power Block,on Trucks they said a stroked jeep 6 cyl is the most cost eff...
i've got the Auburn ected locker front and rear. it's selectable and has the bonus of being a limited slip when not locked, which allows me to do more without having to locking the axles.