New diffuser and exhaust

Hi. 

I've just bought a Audi A3 8V Standard Edition from 2018. When you live in Denmark, we pay like 2-3 times more for a car, than most places, so if you want something cool-looking you either will have to prioritize your money in a crazy way or pimp your ride - I've chosen the latter.

I want to give the SE model a more aggressive look on the front and rear. To find a new front bumper is easy, but to find a new rear diffuser for the rear is not. Everytime I find something which I like, it's for the S-Line version. Two questions I hope someone her can help with:

- What is the difference between the SE and the S-line model regarding installation of a rear diffuser?

- What is the difference between the Audi 8V 2017 and the 2012 version regarding installation of a rear diffuser? (I am wondering, if I could order a diffuser for the 2012 model)

Hope to here from someone

Best regards

Mikael, Denmark