Pete's number's in his signiture above and paul's is around somewhere if you look through some of the traders posts on here. They are dead easy to fit. My gran could probably do it. The lamba sensor is located just behind the turbo, it screws into the exhaust and you'll need a spanner to undo it. It has a wire which if you follow it eventally comes to a multiplug behind the head. somewhere. simply unclip it and replace with new one