Now that my rear diff is out along with everything else is it wise to add extra welds to them? They look soooo weak as they are. I see the torque box renforcments are avalable too.
While your there i would say yeah weld them up. The ones on my mustang are welded. If you plan to have a high powered application it is really a good idea to do it. The stock tac welds tend to be weak.
They really are fairly strong. They only become a problem when people do what the factory never intended - heavily modify the car. They only become a problem when high horsepower is added and mixed with serious abuse.