^^ Suzuki Samurai rear axles would make good candidates for what you are looking for. Good aftermarket support as well. Gear choices of 3.73, 4.57, 5.29, and 5.38. Lunchbox, spool, LSD, and ARB available. Just ditch the brake assembly and run SJ410 backing plates which serve as bearing retainers. This replaces the hunky drum backing plate which served as the stock bearing retainer. This axle would be extremely simple to narrow as well as weld 930 flanges on the ends. Pretty light and strong for its size.
Below is what I am referring to. You can rid the OEM brake backing plate and utilize the setup on the left. It would be very easy to put a Suzuki diff in IFS/IRS trim. The OEM bearing cups can be separated from the housing and re-welded to your shortened one. Shorten and re-spline your axles and you are done.
