I have Franklin rear subframe bush tool for BMW E39 ( Salon )
I bought it from UK recently ( 350$ delivered - the cheaper which i found ) to replace 4 big subframe bushing on my car - nice tool and easy job with a right tool
It solved my rear floating issue ! No need this tool - 300$ delivered . First come - first take !
I can consider a trade on E39 rear diff bushing tool if you have such