97 zj awd 5.2 4x4 rear dif and axle issues
 

Ive been experiencing some hard popping and grinding when going straight down the road ..ive replaced cv axles front.rear bearings and all ujoints...i assume its in my rear dif ..as i also think it could be something wrong with mychoice of ride.but ive had this thing for 2 years now and love working on it..just stumped and need to know if anyone can help me fix this.. Thanks
https://cimg9.ibsrv.net/gimg/www.che...9bc22f1f3a.jpg
Daily driver on 31's
https://cimg3.ibsrv.net/gimg/www.che...9cd213f7c3.jpg
249 transfer case
just replaced this