PU Truck mag That answered a lot of my questions about these covers. Extra large ones may not make a lot of sense because they disturb the oil flow in the housing.
Fish be HONEST, what date were these pics taken? Looks like a highway princess that has no idea what a deer camp looks like.
"with a steel finned factory cover" where are the fins???
Yes mine chattered on take off turning towing 33-35k combined but I had exceeded the time limit for towing heavy on my first change. Not sure your diff has seen a hard days work as mine does at 35k combined.