How can I go faster while looking/sounding stock?

[91GTturbo]

If you want to keep the sound stock or close and have performance, a turbo is the way to go. A friends car just made 491 rwhp and 536 ft/lbs of torque on the stock cam, TW heads, and a Trick Flow intake in 103* F heat. Car idles stock, sounds stock, but it sure don't run stock(6.98 at 102 in the 1/8th in the same heat and on ET streets). I'm hoping to be in the mid to low 400 rwhp range once I get my fuel system finished myself.

As far as the ultra flos, I run them because turbos hate chambered mufflers. My turbo and stock cam do keep them quite. Another friend has them on his heads and cam NA mustang and I think their almost as loud as 2 chamber flowmasters.