Upgrading differential in 3.6R

[lagwagon]

Has anybody upgraded their rear diff to an LSD unit?

I read in another thread that our rear diff is an R160 but the pictures I've seen online of it do not look like a typical R160 case (forward set of mounting holes isn't there, casting shape is different etc.)

I've found 3.083FD R160 JDM VLSDs for pretty reasonable prices but I'm not sure if it will 1) bolt up, and 2) accept our axles. Any help?

I've also seen the Cusco units that show compatibility with a wide range of models, including ours, but they are close to $2k CAD + setup and install and I'm looking for a cheaper OEM+ type upgrade, or I'll leave it as is.