2011 Chevrolet Impala Brake Pad Set

Yes, the wheel will need to be rebalanced to avoid premature wear on the tires.

The proper way to remove old frame bushings is by first raising and supporting the vehicle so you have access to remove the intermediate shaft from the steering gear sub shaft. Once that is removed you will need to remove the frame bolts and slowly lower the rear of the frame so that you have access to remove the upper and lower insulators.