1) Euro corner lights are orange, US ones are yellow. Either will fit as the mounting points are 100% the same.
2) You would need to run some vacuum line, and perhaps add another vacuum reservoir and check valve
3) The wiper motor brackets, wiper motros, and wiper arms are different. The euro wiper motors turn more on each sweep. The brackets have the motor in a slightly different place (US motors are inboard a bit more) and set further back in the car. Of course the arms are a totally different shape. The euro motors also wipe in the opposite direction.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.