you can see the raised center section of the solid bush here....that is the only bit that contacts the body normaly, which is gash imo


and you can see how the poly bush sits over it with the cut out in the center...

i didnt fancy all the rear weight being sat on that small area of the solid bush, so i did this...




it should reduce noise, reduce the vibration which causes the center bolt to work loose(mine never has) and fills the horrible gap


and looks like this when done,



the bush squashes up tight against the body, increasing the surface area of the bush