I'm not bad mouthing 9" rears at all.Just seems strange to me how everyone rags on 10 bolts,and raves about 9s.10 bolt has a considerably larger diameter pinion than a 9".Of course you can UPGRADE a 9" to a pro gear and has the same size as a STOCK :wink: 10 bolt,which is same as stock 12 bolt or dana.As far as bearing caps,it was just a thought.How come rear loaders NEEEEEED them,and noone even considers reinforcing Fords? :?: Not claiming to have any answers,just an observation.Granpapa always said to "think for yourself"