Pretty sure that the terminals are larger/different style on the Aux14 vs the powersports batteries. Otherwise, I think they are dimensionally the same.
If I where you I would do the AUX battery delete
The AUX battery can and will cause many many issues when it fails
When my 2018 Rubicon AUX battery faild it fried my 8.4 radio. $750 for a used replacement radio
Hundreds of people have deleted there AUX battery including both my Wranglers without any issues