Think about it this way......there is no reason why it shouldn't work and fire up the car. Since you are changing the whole ecu...the rest is/should be the same, sensors are sensors.
If those plastic pins are the only physical problem, beat the crap out of those. A worse problem would be if the pin layout is not the same, but even this can be solved by comparing both the Euro and US wiring diagrams.
Wait for C2's answer, I'm sure they can find a solution to this, you've got a solid setup in here, hope everything works out for you.