Hi Alonso I bought the bumper of a member on this forum about 5 years ago from London I believe it was bought from German eBay its an rs4 style bumper for an a3 sorry I can't be much more help, you can buy the side vents for around £50 and have them moulded in and the bottom mesh in the bumper grill is just plastic honey comb mesh, the lower splitter is of a cupra r with an s3 grill it looks good, I love that car she turned heads everywhere.
I'm Alonso and I own an Blue Ming A3 Sportback.
I was looking at the picture thread and saw your red A3.
Gotta tell you, that cars looks awesome!
I was wondering if maybe you can let me know the brand/model of the front bumper and the rims too.
I'm also looking for the front headlights.
(Sorry for my bad english but is not my native language)