I've had the SVT exhaust with the center resonator replaced with a Magnaflow 5x8. Quiet, deep, comes to life very nicely when your foot is planted - but not quite enough to interest the local constabulary.

Soon will be putting that same setup on the V-6 Mystique and a similar setup on the 4 banger 'Tour. Liked it so much I'm doin' two more!