Thanks Phil, I had / have been tossing around the idea for going with a Wise Fab Rally suspension, axles. Yes its overkill but that's not the point.
https://usa.wisefab.com/shop?field=1...from_store=en2
https://usa.wisefab.com/bmw-e36-rear-halfshaft-kit
I do like that Wisefab has rebuild parts available.
So far I've only changed all the Front and Rear suspension parts with new OEM and Poly bushing everywhere, springs, camber plates, shocks and added Powerflex rear lower control arms.
I am really curious what the RT4 rear suspension actually looks like as I'd really like to go to the Ford 8.8 IRS.