Thanks for the very informative description above. This is a lot better than most. It seems to me that after reading many posts through out the years on this dead end, at or about the 600 lbs of torque is where I gets dicey. Weight and the way the car is launched also plays a big part in the time bomb.
Currently I have a 8-3/4 in my Duster that is going to get a lightening program done on it. But it won’t be a full tilt effort. I have no illusions that the rear will last under the planned engine. (small block)
For now and for a while it’ll be run with the stock K frame and SS leaf springs.