Euro 6 means big exhaust units on the frame. Some brands like MAN, DAF and Volvo also have split units where the DPF filter is standing straight up behind the cab. That is a nice solution, but they also take some space.
WVT from The Netherlands now developed an alternative. Using the standard MAN exhaust damper with DPF WVT made a slim standing exhaust pipe for Euro 6. The company already mounted this system to dozens of new MAN Euro 6 trucks. Click here for the WVT website.