For sure my 2016 has an open 3.07 230 mm differential as part of the 29R Road and Track package. Doesn't make any sense why they needed the larger ring gear but there it is.I remember last year when looking at dodge.com the Performance Handling Package included the 230mm rear axle, which has been removed from 2021.
I don't think Dodge makes an open version of the 230mm axle.
from the build sheet
3.07 Rear Axle Ratio
230MM Rear Axle