The part numbers are different which is not surprising so the only way to know if to compare them. Based on the measurements I found, they are not even close. However, this was for a 2005 Ion and you didn't tell us what year so I just went with the same year as the Malibu. Let me know if it is different and I can see if I can find some measurements for it.
Images (Click to enlarge)
Sunday, November 24th, 2019 AT 6:19 PM