I went to get just a stainless steel middle pipe fitted this morning and it turns out the cat was knackered and causing the rattle. Bit of a schoolboy error on my behalf but I just assumed it was the middle because not only was it scraping but the last exhaust I had fitted before my new back box was a back and middle so just thought it was bound to go so soon after having a new back box. So now looking for a new cat. Can you get these in stainless steel and how hard are they to fit. Cheers