The focus I bought when I examined in beneath it I saw that obviously the gearbox mount was shot as someone had 2 think strips of rubber in between the mount and where it bolts onto the body on the floor. I thought this was what was giving me the annoying thumping against the floor pan and around the gar stick tunnel inside the car only in reversing. Well I took out the old rear mount and the 2 rubber strips and replaced it with a new mount although it did not seem to bad but when I had it there I replaced it without the 2 rubber strips. Well I test run and mmmmmm well it was not much better. So I thought ah well its probably the 2 front mounts so I replaced them and its still there. Anyone have any idea what could be wrong I mean the two fronts where definitely shot. I was just thinking as I write this could it have anything to do with the bolt on the rear mount that goes through the body of the car?