Join Date: Oct 2003
Location: Temecula, CA
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There is a difference between early and later unit bearings. The wheel mounting surface is lower on the later YJ/TJ ones ('92 or -3 and newer have the newer style bearings). The brakes are different, too.
Rubi 44's share all of the external features of the TJ Dana 30, including axle tubes, knuckles, c's, CA mounts, track bar, etc.
The stubs are the same as well, since both the later model D30's and Rubi D44's use 760X u-joints.
As far as I can tell, the Rubi 44 is just a 44 center section with D30 stuff pressed into it. Other than the inner axle shafts and carrier and gears, etc., everything is identical to a TJ axle.
"And then I said, 'Just like that, but with more gas!' Oops..."