Strange Noise

[Qball76]

I don't know if anyone else has had this problem, but after I installed my Racer X suspension I took the truck out tonight to play around. When driving slow it doesn't do it, but when I go wot I hear some loud clicking noises at random. For some reason I can't seem to locate it, when I put the truck on the stand and go wide open throttle it doesn't make the noise, the drivetrain spins freely and there's no binding. The gear mesh is correct, I think I'm losing my mind trying to find this noise. Could it possibly be coming from either the diff or the transmission and it's only doing it under a load???