C5 A6 2.7T Exhaust.
 

As the title states this thread is about exhaust. I am looking into making a 3" cat back my self and was wondering what the tools needed are. I have most things needed but is it worth the time that it takes to make one or is it just better to buy one?

If you wan't totally awesome and money is no object, by all means buy one. If you are one a budget and can do the work (bending/welding), buy a couple of mufflers and have at it.