While trying to collect data and facts about my recently bought MF35X I found some old threads here showing a few misunderstandings. They may have been addressed before, but anyway, here it is.
Apart from the 35s produced in the US and UK, there was also a line in France with a few differences. For one, in France they used very different serial numbers (my 35X has serial number 72869). Furthermore, unlike the US and UK models, in France they did produce the 35X with a AD3.152 direct injection engine giving about 45.5 HP (some claim 47 HP). I believe in the US and UK this engine was first used in the 135 models.
Apart from the 35s produced in the US and UK, there was also a line in France with a few differences. For one, in France they used very different serial numbers (my 35X has serial number 72869). Furthermore, unlike the US and UK models, in France they did produce the 35X with a AD3.152 direct injection engine giving about 45.5 HP (some claim 47 HP). I believe in the US and UK this engine was first used in the 135 models.