08 Cummins exhuast

I went ahead and pulled the plug on a full emissions delete on my 08 3500 6.7 Cummins. Yes I understand it could get me in trouble but coming up with 800 for a full delete and tune was much easier than replacing the egr valve, sensor and dpf as far as my bank account is concerned. I have what I need to straight pipe it, but I drove it home today with nothing on after the bracket where the dpf bolts on. The sound it makes as is, is pretty incredible. It has a very good note, my problem is first of all the loudness of it. It will be great for short trips but gave me a headache after about 2 hours today. The other parts is the "whoosh" noise at slow acceleration and running at a lower rpm such as cruising around 30 mph. I am going to put a muffler on it, but I want to find the right one. I want to eliminate the whoosh and quiet it down a little while keeping the actual exhuast note or maybe making it rumble a little more if that's possible. Drone doesnt bother me too much but a raspy sound makes me want to bail out at highway speeds. My goal is, as my ex calls it "panty dropper" deep Cummins sound that we all know and love. I I havnt heard any 6.7s that sound nice without that raspy note at some point in the rpm range while the old 5.9s all seemed to sound pretty great with just a straight pipe. Any input would be great, I'll have to take someone's word for it because clips off the internet never do justice to the actual sound you'll achieve.