Well the problem started a couple weeks ago (2-3), knocking under the floor pan nothing bad just annoying and after research I was pretty positive it was the Torque Shaft Bushing. Most everything I read said its not harmful to leave unfixed for the time being, so I did, I've been waiting on the part to arrive.
This week still no part, but I began to get a vibration pretty intense (steering wheel) when going through 2nd gear (so its low speed), that has gotten worse and worse and is in sync with the knocking at the floor. This is where my question comes in, is it possible that the torque shaft is causing this as well or just coincidence.
I've done research to see what else this could be... Front driveshaft was rebuilt less than 4 months ago, the rear got new u-joints in September. No vibration unless its under load and the sound of the knocking increases based on the torque from the engine (increasing load).
I know this topic has been covered numerous times, yes I've used the search as well as other forums, it just seems strange that the vibration and the knocking go hand in hand, but the knocking started first.
Hope that makes sense. Thanks in advance for the help.