Hey all,

I apologize in advance, I know there are a lot of threads covering a variety of exhaust based questions, I just haven't been able to find one that completely covers what I'm looking for, maybe I'm just not looking in the right place.

I can't seem to find what/which components exactly are what in my factory exhaust (is it DPF/Muffler? Is it DPF/SCR? DPF/Cat?)
The truck is a 2015 2500 CCLB pickup.

I'm looking to get the proper fitting delete pipe (DRD MM3 just ordered), and retain the muffler (if it is a muffler) and keep the very quiet factory sounding exhaust.

I'm not looking to cut anything if it can be avoided, direct fit would be perfect.

If anyone could point me in the right direction/ part numbers, I'd greatly appreciate it.