I looks different. Ill give it that much. The doors are boxes are funny, looks like he made some lil boxes, and just screwed them to the door panels. Maybe he just dont know how to glass, or wants to take the time.
One thing that sucks about a Benz, or at least the older ones, the gas tank, its between the rear seat and the trunk, and theres a nice firewall there too, so it makes that trunk useless for a system. My buddy has a 93 190E class with a 9515 and theres just no air movement from the trunk into the cab, but you still can kinda feel the bass.
Id give the guy an A for effort just because it is a very clean install. Who knows it might be his first setup, I bet it has some thumbage to it tho