I would just take your car to your preferred bodyshop, be upfront and tell them about the rear lights and were you sourced them from, end of the day its just another job to them and will see things that are not oem all the time, if you tell them were they are from it makes life easy for them and will not have any coding issues when putting back together,
My wife's UP! is in the bodyshop at the minute a car backed into that in her works carpark, not even 500 mile on the clock, makes my piss boil that some drivers are so irresponsible

