I feel like i have this same problem. I dont have FWD. Seems to happen when the engine is cold. When in first gear and holding it to about 2,500 RPMs, depressing the clutch in there is this audible knock/clunk noise. i think i have seen similar threads on here describing this occurrence. My front control arm bushings are straight and dont need to be replaced as they were replaced 15,000 miles ago.
The noise is strictly when i depress the clutch and it makes the knocking sound, i move it to the next gear and let out the clutch.....RTABs??