The condition of my old bushings makes it impossible to do any objective comparison as to how much better they are over an OEM bushing. The old ones had worn so much they were just along for the ride.
After a 30 mile test drive on some Virginia Byways and a 5 mile gravel road I did not hear any more Thunking and Knocking over uneven surfaces. For the longest time I thought it was coming from strut mounts.
The steering now feels a slight bit heavier while initiating turns.
EDIT: 2 weeks and 3 tanks of gas later and the thunking and knocking has not returned a single time
The SuperLube grease I now include IS food-grade. The urethane is not at all toxic when cured. However the release agent is probably:nerd::nerd: not healthy. Now if I could oilve-oil and spices as a dry (talc) type release agent, the @Rub might on to something.