Attention? Not in my case. Two of the fastest cars I've owned have been "sleepers". Cars that look stock until they come off the line and leave you in the dust.
Mostly a guy thing.
My current vehicle is a supercharged 4WD Toyota Tacoma. It's way faster than it's "supposed" to be and really frustrates the racer wannabes when they can't make my 4WD pick up truck get smaller in their rearview mirrors. Lots of fun!
10-4 on sleepers! One of the great thrills out there IMO! We are soul brothers, my friend. Under-stated is the very most fun!
Now I have to admit I haven't done this for some years but it was great fun to clean clocks of '57-'60 Corvettes with my '55 Chevy four-door sedan that had big exhausts - but quiet - to conceal a very hot highly modified small-block engine. We stomped them every time.
These rice-burner kids have no idea what real fun is!
Did those two cards sound stock as well?
10-4 on "sleepers." Great fun to out-accelerate the guys with loud exhausts. Did that often years ago.
Done right, a high-performance engine will be quiet but still have plenty of power. I never did like all that exhaust noise either.