Unless you decide to get rid of the complete car the IP will have to come off. So, I second the need for pictures while the pump is off.
Depending on what where the damage is and what type of governor is on the pump it may be possible to swap your parts into another governor housing (taking careful measurments of the origional governor adjustments).
Is the physical appearance of the pump different (different IP pump model or has a different governor) from the US to the Euro model or is it just that the calibration of the IP is different?

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84 300D, 82 Volvo 244Gl Diesel