That is a fun idea along the lines of shooting break Jaguar XJS's and those square back Corvettes.
I quit using photoshop but it would be easy to do (at least electronically). The angle of the photo makes it a bit harder than it might be. If I get something done I will post it.
If I understand correctly, AMX would like to see a Crossfire frount end on a MB wagon. To do this would just require cutting a sliver crossfire front end then pasting it onto the supplied image.