i see a4's and 2.0t guys upgrade to r8 coils, referred to as "red tops" I just wasn't sure if my stock b6 coils are the same part since they also have a red top, and didn't really see a part # to confirm while searching. anyone know if the coils are the same part as a b6 s4? im buying new plugs and coils and would rather an upgrade if they are better.