De Rosa Merak: compatible seatposts

NewGuitar
NewGuitar Posts: 2
edited September 2015 in Road buying advice
I've got De Rosa Merak bike which is awsome. However I have to replace the seatpost since I need a longer one but mine is quite short. The problem is that Merak has a very specific aero seatpost.
Does anybody happen to know if there is a compatible seatpost from any other brand.