Originally Posted by joe_padavano
Unfortunately the Impala uses a 5 x 5" bolt circle, the Monte is 5 x 4.75. I don't think there are readily available rotors for the smaller bolt circle that swap onto the Impala backing plates and fit the drum e-brake shoes.
Thats a good point.
Redrilling the axles and rotors to the small pattern is not bad job.