They are pieces I am putting together . 2 different brands . The Mid-pipe is MAC and the Cat-back is Flowmaster .

You can mix and match brands as long as they are for your model vehicle they will match up .

You can stay with the same brand if you like - for example you can get a Mac Pro-chamber and a MAc Cat-back .

Alot of the companies that make mid pipes do not make cat backs and vice versa . So you end up mixing brands most of the time . There are exceptions like Mac and Bassani (which is very expensive) .