I will only order from the store, never online. That has work well. I stopped ordering online from them after my card number was compromised by an employee and they charged over $5K in computer's. My bank was really good and alerted me before the charge was approved, but still.
Run away and save your self some money and headaches, researching parts and products..... Lol You will spend all of your hard earned money on extra parts and goodies. Other than that, its a great truck. Just remember JEEP = Just Empty Every Pocket. :LOL:
Buy the best you can afford, its your life that is depending on them. I personally have a couple jack stand sets from NAPA that were purchased about 15 years ago and a MAC 3.5 ton floor jack that's close to 4 years old.
Did you try to run without the front drive shaft and see if the vibration is still there, or just with the rear removed ? Did it vibrate with the stock tires and wheels after the lift? You say you tried your buddy's 37's and it was worse. Do you still have the stock set to try? Pinion angle...
Might try a spacer installed between the frame mount and the carrier bearing. I know its said that one is not needed, but there are some companies out there (AEV) that include a spacer for their 2" lift. Might be worth a shot.