I don't know if this is more work than the OP wants but, here's what I did.

Bought a set of auger inserts from JEGS and modified them by welding a metal plug in one end. I drilled holes through the tube in front of the plug to allow exhaust to escape.
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I took the pipes to a local welding shop and had them cut the turn outs off. You could do this step yourself but you'd need bigger stones than me.
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The augers were trimmed to fit partially inside the glass pack of the pipe. The welded in metal plug was drilled and tapped and a spacer made to allow the auger to be bolted to the turnout.

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I then took the pipes back to the welding shop and had the turn outs welded back on with the outlets indexed down about 30 degrees.
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Here's them back on the car.
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The metallic ring and bark are almost gone at idle and you can have a normal conversation while cruising at 55mph and less. Above that speed you are hollering in the wind.

HTH

Norm