You can buy new but smuggled muffler mostly HKS HiPower from Montgomery. Make sure its not China copy, there is a JASMA seal to prove that and it will costs you 5-8k only. For fitting, drive to the back side of Lahore Zoo, there are number of muffler workshops. Tell them to attach a round bracket and support it through the stock muffler rubbers attached to the chassis. I got mine installed from non-professional and he welded a rod directly with the muffler which sometimes damage the muffler from inside.