I saw this Moser stuff today

Strong housing but the 8 3/4 carrier does have it's limits. Know why the Ford 9 inch is so strong? not because of the 1/4" extra ring gear. Because of the 3 bearing pinion support. The pinion doesn't want to walk up the ring gear under high horsepower/ maximum traction use. The Dana is just bigger and more beefy. It has it's limits as well in the bigger series. (70's and 80"s)