It comes dual out of the exhaust mainfold, then single to the 2 cats, and then out the muffler on the left side. I'm not looking for a true dual. I just found a Borla cat back that fits the M3 and I wanted to see if it would fit on my car.
<span style='color:blue'>2000 323i Sport Wagon (yeah, I got the wagon!)
Remus Sport Exhaust w/ Ralley Tips
10" Kappa Perfect 10.1
1000w Kenwood Amp</span>