8 1/4 axle specs??

Well, after much research, I think I'm going to retain my stock axles. I really doubt I would be snapping them with BFG radials on the car.

HOWEVER - I am going to take that axle money and put it into a locker (I think the MP suregrip would really be my weak link).

I am also thinking about a Moser aluminum driveshaft setup. Anyone know if these are durable enough for constant daily use? I know Ford was putting aluminum shafts on the Lightnings, and they would either throw them or the caps would wallow out. I have also seen new QC Rams in need of Ujoints (also an aluminum shaft). Just makes me second guess the idea.