for you kiddies with a drone issue, here's what i did. I wanted the mac axleback and I knew they droned. So, I had some "J" pipes welded into my setup. They're adjustable so where ever any drone existed I adjusted until the drone was negated. Had a similar system on my G8GT with severe drone. Took care of it completely. Only cost about $150 and I got to use the mufflers I wanted. They do not change the sound of the mufflers. Here's what it looks like. You can see the adjustments (marker pen) I made on the last pic. Only adjusted by 1/8 " at a time.
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