Hi, i'm new here and I didn't found the answer to my next questions: My car is Audi A3 -04 -Can I install 6,5" two-way speaker system to my car's front speaker places? Is there enough space for 6,5" mids? -Another question is that where can I find guide to remove my car's door cards? Is it difficult to do? And in the end, is there something special to know when i'm changing speakers to my Audi A3 8P? Thank you I appreciate your help.