If you bash hard these might be worth a look
http://www.impaktrc.com/product_info...roducts_id=364
They include a 17mm hex but it rides on an 8mm axle they have set screws for the pillow ball holders and have aluminium reinforcing to make sure the pillow balls dont pop
they are designed to work with the stock driveshafts they replace the stock axle with an 8mm one they may work with cvds the pin setup would have to be similar to the stockers