WTF? How do you fit 3 res., 3 mufflers and the stock cats? And how can it still be loud?

I honestly think that just adding a second muffler to mine should do the trick.

 

I have resonated test pipes and a resonator at the end of my Y pipe. Afterwards it feeds into a muffler that later splits into a dual exhaust that each have a muffler. I can interchange my exhaust system to eliminate the dual muffler with straight pipes, which i tried and it's brain rattling loud.