So I guess by your analysis a Dana 60, 70, or 80 pinion is unsupported? Therefore weak? I've said it many times before, There is a reason why a 9" has three bearings, Because the inner and outer main bearings are a 1/2" apart! without the nose bearing it has no lateral support! But you that want to believe the 9" with it's puny 1.313 Diameter pinion ( smaller than the 741 which is 1.375 ) is better, carry on.