I am unsure about this coupling...
I don't think I can just put fuel hose onto that with hose clamps , cause there's those holes on the sides, and the hole in the middle is just 1mm 8O
This Bosch910 pumps seems to look the same size as the old pump,or maybe marginally larger....perhaps that coupling will unscrew and the old one will screw into this new pump? .......
BTW,that is the out side (to the engine), yes?