Popping noise while turning Right?

Usually the one with the tore up boot.

If the other one is tore up too, you might as well replace that one too.

9 times out of 10 a visual will give you the answer, if not go to a large parking lot and do u-turns to the left and u-turns to the right. From that you should be a ble to tell which one it is. Take a friend as the more ears the better. :)