hitch wire question

This is for my brother who has a 2013 AC 4cyl 5sp 4x4. I've been reading and searching but maybe not the right words or what I'm looking for.

Since this did not come with the tow package (4cyl wasn't an option correct?) is there a factory hitch wiring option for 7-pin? I've seen the harness for the 4-pin but nothing yet on the 7-pin.

I currently have my trailer with a 7-pin for additional features (backup-lights/+12V power) and wired my own 7-pin on my '04 using relays and a plug-in spliced to the receptacle.

Is the only option a 4-pin or can the 7-pin full harness be purchased? Hitch will be a Reese/Curt for under $130 so that's an easy one.

Didn't know if anyone knew a part # or if you've tried and met a dead end even with the dealer.