Like the title says I am looking to replace my head unit with a Kenwood DDX9702S. I am looking at the install kit (wires, adapters, etc.) and the kit comes either for JBL amps or without.
No it does not. In my understanding the only way to get the JBL system pre-2014 was to get navigation regardless of trim level. Post-2014 it's only available in the Limited.
Your amp is integrated into the head unit, like most aftermarket head units.
