I asked for one on my WRX when I bought it (It didn't have one as delivered). After few months, I too grew to really dislike it. I contacted the salesman I bought from and asked could he get the stock piece for me. I said something like “I wished I had saved the original”. Sure enough in a few days he had one for me - for free.
Did you car come equipped with the extension? People do swap them out at delivery … perhaps you can ask your salesperson the same? What do you have to loose?