Think I may try and change mine then... did you have a part or model number for it? Actually, I assume yours will be different if it's a saloon...
They used to offer a standard pipe without the anti-drone attachment but demand became too high for the anti-drone pipe that they were forced to scrap the standard one to keep up with orders. From what I'm led to believe, there is no difference in between a 3 door hatch, to sportback or Saloon resonator delete pipe length. One size fits all, for the Golf too.
@BCS Nige Will be able to help you with any queries if you like.