Pat A5

Hello, First of all sorry if this is the wrong thread, I’m new here and really need your help. I recently got my hands on a very cheap A5 3.0 Quattro 2007 that has been hit in the front and fitted with an unknown replica bumper. It had no plastic bits plain bumper. As I will proceed to restore this car I’d like to complete the full bumper without the need of buying a new one. After trail and error I found out that the S Line model vents fit the bumper but getting the same model lower defuser I found out that it does not fit. If any of you know which one will fit I’d be very glad. I have a lot of work ahead of this car including fixing the hood, wrapping the roof and replacing a lamp so I’d like to keep the extra costs minimal. Also last question, I’d like to hear your opinions about small parts from AliExpress such as the trunk wing or a bumper defuser. The price compared to EBay is not that much cheaper which leads me to believe these parts could be legit Thanks for your answers in advance!