I could kind of hear the noise in the vid. so here is my best guess. As others have stated (and as I had to do with mine) the drivers side pipe had to be extended below the flange a couple inches as the front driveshaft would hit the crossover pipe. You can see if there is any rubbing on the top of the crossover where the front driveshaft would hit. The extension or dual cardan front driveshaft that is typically recommended with these lifts is due to possible vibrations at higher speed in 4 wheel drive. I didnt do this as I dont typically drive high speed in 4 wheel drive and even when I did never noticed much vibration.