I truly appreciate all the responses, thank you all for your help.
I replaced both sway bar links and the rattle over bumps remains. I inspected the bushings on the old ones and while they were a bit brittle, they were still intact and preventing metal to plastic contact. I had a feeling at that point that this wouldn't resolve the problem.
Anyone have an idea what I should check next?
I CANNOT find any loose or totally worn bushings on either side of the suspension, that might be causing the problem. The muffler donuts are OK.
Benzmac, are you out there? Plan B??