Rear End Drop.......

Hi Ed

As long as your back wheels are in the air and you are not undoing your springs, The rearend will be sitting on your springs and shoud not move when you remove the plates. If you do not have a drive shaft attached, I would support the third member so it cannot spin. Just mount the plates the proper way and retorque.

Most of all never never never let a chebby guy fix your car.LOL.
Dwayne