I had heard about this a long time ago on CGP, before you could get the set up at Wbody. I did a fairly nice write up about it on CGP when I ordered not only the beefed up Moog rear end links but also the Moog front sway bar end links from Oreilly's here locally. The rear ones are super sized compared to OEM. The front links came with the urethane bushings and the hardware seemed a bit larger though at the time I could not confirm that.

But Ive been running that set up for a couple of years now.