Somehow I got it in my head the sound was cyclical with mph. If it is only when hitting a bump then I apologize for giving crap advice. That is an entirely different question than the one I was trying to answer.
No worries. It's all good. I appreciate all of the replies. My lower back decided it wanted to have me functioning like a 90 y/o yesterday afternoon. Because of that I wasn't able to get out there and check the TC linkage, so the cause is still unknown.
Woke up this morning with no change in my lower back, so I'm thinking I'll just go ahead and order the kit. If it isn't that, I'll just add it to the standby parts.
Sure sounds like that may very well be the culprit though.