I'm looking for any of you guys that has gutted out a stock muffler on a MB 35. I don't want to completely gut out the insides of my stock muffler. I just want to add two more outlet ports on either side of the center outlet. Before I cut any holes in my muffler, can anyone tell me what kind of internal baffles are in a stock 2015 muffler and where are they located?

they are disc spot welded in. look for the spotwelds on the can. there are 2 rows of them. add your pipes to the left and right of the spot welds

Thanks Will