I had to make the hole large enough for the socket to go through. Probably 11/4" from memory. The old bush was shagged so it was destroyed with a chisel to get it out completely. I left the new bush in the freezer for about 4 hours before I fitted it. There is just enough room between the cradle and the spare wheel well to get the bush started in the hole. I used a bit of a drift to get it in most of the way before it expanded and got real tight. I then just used a longer bolt packed with large flat washers to pull the bush in. I had to use some spacers on the front bushes due to trying to pull the whole diff rearward when pulling the rear bush in. I just kept adding flat washers and giving it a couple of blunt whacks with a hammer everytime it got tight until it was seated all the way home. I removed the pull in bolt and refitted the factory bolt. Everything was torqued to spec and a grommet fitted to thespare wheel well. Piece of cake really. It would have been easier if I had access to a hoist to get to a more user friendly height, but I didn't, so I just got the car raised as high as I could on jack stands. All up I think it took me and a mate about 4 hours to do. I need to it again as the second one has collapsed, but this time I'll be droppping the cradle as I have a heap of bushes I will be replacing at the same time to try and get some extra life out of it. Talk to Pat, aka senna_T. He'll be able to fill you in on the parts he sold me to get rid of the tramp and a price. Good service and good products to match.