There are more players in this game than just aero.
https://www.camaro6.com/forums/attachment.php?attachmentid=1030031&stc=1&d=1588313757
With that said, I believe that the Chevrolet official top speed of ZL1 is 198, ZLE is 190. fastestlaps.com concurs.
https://fastestlaps.com/models/chevr...maro-zl1-mk-vi
https://fastestlaps.com/models/chevr...aro-g6-zl1-1le
For me, chopping off top end speed for some serious bite in the corners is a fair trade.