I put a three inch lift on, with a tcase drop and new trackbar, the front is fine but the rearend is making alot of noise, when i start rolling i hear a clicking noise and when i get off the accelerator it starts humming so i think its the driveshaft and axle but im not sure, any ideas what it could be?

 

U-Joints in the drive shaft.

 

it happens every revolution and i think its something on the wheel but im not sure cus sometimes it makes the clicking sound, so i need new ujoints?

 

x2 on u-joints.

 

what am i suppose to do with them? new ones? how?