I have the option to buy a narrow track CJ5 Dana 30 axle and a matching Dana 44 rear. I have a TJ and want to strip their ARB lockers and ring and pinion for my 2004 LJ and then sell the CJ axles for parts. I am confident the R&P and locker will work for my TJ dana 44, but I am worried about the front Dana 30. I'm pretty confident ARB only makes one locker for the 27spline Dana 30, but the R&P may be different. I know from research they are both "standard" rotation gear sets but they may have different pinion lengths. They may also have a different number of ring bolts. The dana 30 I might buy is post 1976 disc brake setup, the Dana 44 is of unknown provenance but it likely has 30 spline axles because the diff is centered. I won't know more till I open them up. Anybody have a working knowledge of CJ to TJ axle parts swap ability?