That hasn’t been the case for some time by my understanding, and just trying on the online builder right now selecting 3.55 gears forced me to the 6.7L. Selecting 3.73 gears forced removing the Tremor package.
So based on the online builder 4.30 gears is the only option with a 7.3L Tremor, unless I’m missing something?
i build one yesterday to confirm before posting