I stumbled across this video on Youtube and thought it sounded wicked. They are using a Magnaflow 2 in 2 out muffler with a built-in X pipe from the back of the converters and O2 sensors. Model number 11386.
If so, how does it sound, and does it drone at highway speeds with the top down?

 

Pretty nice growl.

 

Hi - I have a 2002 SC 430 and I did install the Magna-flow system on mine and I love the sound. I am slightly aware of the feel and sound with the top up. Where I really hear the great sound is with the top down and hitting it on the on ramp. No problems with O2 sensors or smog test.

 

Looks like the same exhaust we have on our 2007...we removed the resonators and third cat on the 2002. They certainly have different sounds.