My 2009 Audi A4 Quattro had a timing chain problem as well as turbo misfire & crank shaft mispositioned at 160k miles so I heard it happened to a lot of b8 engines & they fixed it in b8.5 engines. I’m looking for a trusted seller or where to find b8.5 engines & also wondering what components will I need from my current b8 engine to be put on the b8.5. Thanks in advance!