Carbon fiber roof? Why. sheding 3 lbs isnt going to do anything for that car. The roof is an integral part to ANY car, unless your building a race car dont mess with it. They dont make “bolt on carbonfiber roofs” for any car. To do it grab a sawzal and bust out your cf skills and go to town. lol
Carbon fiber engine cover, they make. search 1.8t carbon fiber engine cover. $100 or so irc. Or give me the oem cover and ill make an overlay for you.
Carbon fiber lip kit. Strike 2. Nobody I know makes them for the a4, or any VW/audi bumper(s) I know of.
Do your research. The A4 is a good platform, with TONS of aftermarket support. Money is key, as it is with everything, pay to play. Put 10K into it and it will run 12’s all day, cruise comfy across the nation, and be VW Vortex approved. lol
how many miles, what trans? start with that.