just fitted the 2 month old exhaust! the old backbox was quite hard to get off but after a fair few knocks with a rubber mallet its off, the new one also took abit of wiggling to get on had to grease up both pipes. its first time ive touch an exhasut, it was a peice of cake. but its amazing what 15 quid has done! it now sound raspy and no longer sounds like a tractor! what a smooth puurrrr! amazing!