Don't know where the issues come from. I just recently did the Rear end with new UCA, Spring Insulators, Compensator Link, new Knuckles, Air Bags and Diff. Bushings. Never noticed that before, the DS is in since approx. 4 years now.
So lets cut and Hammer, throw a Pinion brace in and hope for the best.
"cjchevez" no xcal here. SCT Chip and i don't think there is any aggressive about it.
Other than in your case, my noise only appears at mid. range takeoff and not at all in reverse.
My idea of "help from above"... Is a sniper on the Roof