I don't think the Impalas or Montes will work because they all use a 16x4 which will not clear the 13" rotors and GXP calipers. Need to use either of the 17x4s from the GXP Bonnies or GPs.
If you were running F-Body upgrade wheels, and stock rears you could use the 16x4 spares, but the GXP options require the 17s.