Re: 30-spline axels
yep.. stay away from closed knuckle, earily bronco. look for wagoneer/pre 77 chevy/ scout if you want weak hubs and stub shaft.... see the weak point isn't always the splines on the inner shaft there is also the hub shaft(stub shaft)the scout uses the same size appx. stub shaft as the dana 30 from the cj era. I'd stay away from it.
If its going on your cj, I'd look at the scout, and swap on the stronger hubs, or the waggoneer if you don't mind the extra width, or the chevy (pre-77-78) if you don't mind the cutting it down.... if you don'twand to outboard I'd look at the scout and do research on it befor you go out yard hopping.
The road is calling, Ignore it!!
There is life after asphalt.