Points for Best Answer: Simple Questions on Audi TT current model?

Looking at getting a 2007 TT 2.0FSI (200hp) DSG gearbox with 30,000km (18,000miles). Is the area immediately under the rear tail lights made of plastic or metal? There is a dent exactly half an inch under the right tail light cluster and I need to know if it is part of the bumper or the bodywork. Also, to get the facelifted "LED Daytime Running Lights" look on this 2007 model, is it a simple job of just replacing the headlight cluster with the facelifted model's lights? ANY quirks and common problems to look out for on the TT with this sort of mileage?