the PPK2 comes with an additional WATER cooler, not oil. It is a tiny rad that ties into the stock rad, it also comes with a higher wattage rad fan, same one as the 1M. Just picking nits.
The Canadian cars, and the US "is" all leave Germany built the same way, then the exhaust and ppk are added once it arrives on US soil.
Guess you could tell them apart by VIN by checking for the code for the Blacklines?!?