Demstav I have found 6 spare sets in Milano. I will PM you about shipping cost.
Alberto, the rear bumper rubber project is over - already shipped about 60 sets and I donīt expect to have a new production batch unless there is some demand which I donīt believe exist. The front bumper/bananas interface - I have developed a good design which is free on PM request and that works fine in 3D printing technology. I donīt expect to go through tool/mold process because it does not pays off and I have a very limited time available.