As basically outlined above, you may have better luck finding a donor vehicle in the GWN and stripping the pieces off you want, and bringing them in to the US. Put them onto your vehicle here.
Then again that leads to some issues:
- Local regs with changing a gas car to diesel
- US/Canada regs regarding importing/exporting engines/parts
- cost and time associated with the teardown and rebuild.
But if you're up to it, I am sure it's possible.
As they always say, with the right amount of money, anything is possible.
Mikey