Try AMD. They may have what you need though if you need it at a lower cost you may want to start a parts wanted thread. Some one here will have what you need used and at a better price. Wher do you live? Sweden?
There are a few sweden members here. Mabby they can help you out. I have a set of 72 Demon fenders with out extentions. They are the same as Dart fenders. But the cost to ship them to you would be a lot of money.