The reflectors are on the lower part of the bumper/splitter and are identical to the Type R
The rear light cluster (incorporating reverse lights, brake lights, indicators etc...) is different though, you are correct.
It will be a direct replacement and should fit no problem.
Unable to help about where to find one though, I did see a whole set on eBay a few weeks ago. barring that, try calling around scrap yards to see if they've got a damaged FN2. Most likely that the damage will be at the front of the vehicle :facepalm: