First. Sorry for my poor English.
Second. Criticism. Because it seems need it.
If I want to be honest, then I say all exhausts is crap what I've heard on Jeep SRT. Yes, people say that is, this is the best... because they have no reference. That's the point! No have reference!(for the SRT) Maybe depend it from the taste? A little bit. But I don't know people why like the shit things. Folks! Why like you the raspy, rattle, annoying loud, cracked, hollow steel box sound exhausts?...
My opinion is that: build a good or don't do anything!
Ok. What is the solution? Very simple. Recipe of a dope sound exhaust which is devoid of any irritating sound.
1.) Pipes: 3 inch of course.
2.) Mid section: H-pipe or separate true duals. No X-pipe, no chambered resonator.
3.) Rear section. Straight through muffler with sound absorbing material. Important the exact size! If too big, sound will be muted, if too little, sound will be cracked. The good size approx: 3 inch core, 14 inch long body, 5 inch height and the shape is round or if oval then 5x8x14 inch.
4.) Optional if you're a perfectionist: Long tube headers.
Remark: Yes I know the X-pipe make better gas flow but almost kill the V8 burble, and creates higher pitched raspy note.
Two references(no Jeep SRT because no has Jeep SRT with awesome sound yet):
Firebird & Magnaflow: https://youtu.be/gEhgr7KPHok
Challenger & Zoomers: https://youtu.be/jK0OY7sAnZ8
SRT with true duals. The base conception is not bad however the mufflers are too small but it's not far from good: https://youtu.be/B-iLBFbewt8