Carpenter 240+ kit quieter exhaust? 3:1 header

Hello all, I just picked up a 2015 R3 touring that the previous owner had a 240 Carpenter kit installed. It's a great bike. Only had 2500 miles on it. Has the 3:1 header on it with a megaphone. I messaged Carpenter and they do not have anything quieter for me. Has anyone had luck installing an actual muffler with this set up. I'm not willing to tolerate the noise this bike makes. To me, loud vehicles attract the wrong attention.

Thinking of starting with one Flowmaster DBX muffler and if that isn't enough, putting in a Y and putting a second one on. I am fortunate that this is a factory touring model, so I have the bag mounts to hang the exhaust from.

Just trying to find someone who may have tried some mufflers before I start throwing money at it.

Thanks

I used the Carpenter baffle and it quiet it down to be about the same has my 05' with D&D slip on. Till you get above 3000 rpm and then is alive.

I put in a Vibrant Performance muffler. Also installed a V-band so I can change things without pulling the header off. It is much more tolerable. Still have a resonator tip to put on and some header wrap when they show up.

Photos