Gran Turismo 6 Car Sounds: The Good, The Bad, and the Ugly

The worst imo is when you fully modify a car with a v8 engine it all of a sudden sounds like a high revving 4 cylinder or a Japanese sport bike.

Which is bad if (like me) you turn off all hud elements and rely on the sound of the engine to determine where to shift up/down, especially in cockpit view only where ( not sure if I'm half blind or what) it's at times hard to see the telemetry being displayed to make that determination.
Guys did you find cars with real sounds?
I found that mclaren f1 and audi tt (v6 one)
Have real sounds