[Dean]

The only "competition" cars I have seen are for loudest, not fidelity, so I just don't know.

What do they compete based on?

With the driver and passenger in the car?

Do the windows still roll all the way down?

And across what frequency range?

I'm just wondering if competition cars have any relationship to the real world. If there are no humans with fat legs and pants in the car and just a test microphone at headrest height, I could see front stage only making flat response.

With live clothed humans, working windows and a stock dash I don't know how you get anywhere near flat response with only a front stage. It would be great, but I can't see the acoustics easily allowing it.