You will possibly find some minor differences in the sensors and possibly an EGR valve on the US engine. The guts of the engine will be the same including bellhousing pattern, etc. On any engine the pilot bearing area is different from manual to automatic.
The only significant difference is the injection pump. Euro models have a Bosch and US models have an American Bosch. The pumps themselves can be interchanged among engines, but the parts for the pumps will not necessarily interchange.