Hey folks.
Earlier in this thread, there was someone who found a dealer that gave a picture of the parts that were updated in the thread.
When I originally came across this thread, I read about the endlinks. I tightened everything up but still had the clunk.
I purchased those same parts online that the dealer had given in the updated TSB that I didn't fall under and recently replaced them myself on my 2019 rebel. So far, I am pleased to announce that I no longer have the clunk.
It was quite the simple job. There are three of those mounts on each side. The front one, which is located between the front wheel and frame, apparently is the culprit.
I simply unbolted all three, jacked up the side of the truck cab off of the frame high enough to pull out the front mount, replaced, and lowered back down and installed the new bolt, bottom piece that easily pops off and the new mount. Took me about 30 min total. I first only unbolted the front but the other two prevented the cab from separating from the frame enough.
Below are pictures of the mount. I tried to get the best angle to show the differences, which were subtle. But the new mount had higher rubber placement than the old. At first glance, I thought they were the same part but I showed the picture of the two different part numbers.
For anyone that I suppose will be running out of their warranty in the future and happen to get that clunk and was denied the TSB like I was, I hope this helps.
I also Included the part numbers I screen shotted from earlier in the thread.