I know this thread has so many posts it's hard to sort through, but you may get some ideas.
And if someone has a clip with exactly what you are looking for, hopefully they will share it.
Naturally, these sound clips' accuracy is very dependent on recording and playback method.
The stock V6 system was the only one at the time that didn't use enhancement. I actually like the cold start motor-boat sound, and growly acceleration, but I get wanting it a little louder. 2015 Mustang V6 Exhaust Sound Clip Thread | 2015+ S550 Mustang Forum (GT, EcoBoost, GT350, GT500, Bullitt, Mach 1) - Mustang6G.com
Having previously owned a V6 S550, it’s hard to make it sound good (sound of course being subjective). This is the best set up I ever heard. I ended up leaving mine stock