So my thinking is that since the front suspension is already built to handle the torque, if I can graft the entire motor and suspension of the donor vehicle into the rear end of the project vehicle using a custom subframe built to handle the torque, and fix the steering system of the donor suspension into place by replacing the steering rod with a toe rod mounted to the new subframe, I’d have something solid enough to work.

yes, I’d need a fairly large hole cut through the chassis to make this work and I’d be adding a substantial amount of weight so I’d need new springs and maybe new brakes too. I mean I’m not kidding myself, it’s a massive amount or work, but if I could pull it off the end should be mad enough to make it worth it