Not with "some" Modding... But with some major feat and a prayer maybe? The "idea" of having a Diff replacing the Slipper in a 4x4 platform is smart. Just there is no support for this actually. Never was. Not a thing. Something Arrma should have done. I am sure they looked at this from a design perspective no doubt. If feasible they would have done just this already. I think the Slipper setup helps to dampen the shocks that occur with the rather weakish 4x4 drivetrain overall.
Trx parts fitting an Arrma is a stretch.
Put 4s diffs and inputs in it instead, if you're looking for metal. Jenny's usually has them. I did those along with HR aluminum yokes and 4S slipper too.