unless someone knows a trick I am unaware of the tranny has to be disassembled to replace the rear bushing ,
the rear seal cam be replaced easily just tap a screw driver or chisel between the seal & housing & it will start to pop out , when installing there is a Drian hole in the dust seal on the rear seal this needs to be facing the bottom in the 6 0-clock postion, I have a over 2" steel socket I use to install the seals , I have never used this socket as a socket ever ... a piece of tube can be used also