My '99 has the Up Country package and is in need of fresh springs at the rear as it's starting to sag slightly. I have a choice of either the OEM ones (52002392AB ) or replacements from Crown (4886186) which cost half as much. Is there any reason to stick with the OEM springs or are the Crown replacements just as good? I am not looking for more or less lift, I simply want to restore the original +1" ride height.