Ive had a slight humb from the gearbox area for a while now but lately its got alot louder but extra loud when turning right, i took it to a garage and he gave it a check over and said it was somthing to do with the cogs in the back of the box :s made no sense to me. Anyway he recommended i get a new box so ive had a look and from what i can gather there is a 129 and 130? But how do i no which one i have? Its a 2003 172