My current "Bill's" muffler and mid pipe is trashed, so I'm looking for something inexpensive that I can bolt on while still using the current head pipe. The head pipe OD is 1 7/8". "Bill's" doesn't have any more so I'm looking for some suggestions. I really don't care about HP, more concerned about noise. Would like it relatively quiet with a spark arrestor and not have to break the bank..since it's already broke, been laid off since Jan.