A search will find a thread on exhaust sounds, which may help. However, the sound of revving while parked in neutral doesn't bear much relation to the sound at WOT in the upper rev ranges while on the road or track. Nor does it give you any idea of the sound in the cabin while cruising.
I have the Ford Racing exhaust (made by Borla). I bought it used from a guy who thought it was too quiet. Others have sold the same exhaust because it was too loud. It's like Goldilocks.
The best thing you can do is put Rally VIII on your calendar and listen to the concert in person. If you can't wait that long, there are a bunch of GTs in Minnesota.