Audi a6 resonater tips
 

I just got 12 inched magnoflow tips for my 2008 audi a6 4.2 quatro. Just wondering how to get them flush with fabrication. My uncle is a mechanic and I will be bringing it to him to install. I looked under the car and the old tips are much shorter than 12 inches. If anyone has any suggestions to get them flush please post or private message me. I can take pictures also.