2001 Audi A8L Exhaust (flex pipe)
 

I have a 2001 Audi A8L 4.2l Quatro, the flex pipe is busted on the driver and passenger side of the car. I am looking for the sizes of those flex pipes so I can order replacements and have my buddy cut and weld in the new parts. Dose anyone know what the size of the exhaust is and how long the flex pipes are? They look short like 3-5in but I am not sure of the size of the exhaust on the car. Is it 2" or 2.25" or 2.5"? I am just looking for some info or advice on how to get this fixed.