I was just looking at the sales brochures for the 2012 and 2013 F150's. I have them as PDF's. Because I have a Lariat, I was curious to see what the differences in options were between the Lariat from '12 -'13.

The 6.2: in '12 required it was a Super crew, and with the Max Tow package.
In '13 it required either the 501A or 502A package.

Electronic Locking axle: - in '12 it required a 5.0 or the Ecoboost. In '13 it was available.

Lariat "Plus Package": - in '12 had the 6-disc CD player, garage door opener, reverse sensing, rear camera, powerfold mirrors, remote start.
In '13 it became the 501A package. The 6-disc changer was removed and the Trailer Brake controller was added.

Off Road package: - The differences were, in '12 it was not available with the 6.2, had the 3.73 E-lock axle.
In '13 it required either the 501A or 502A package, had a 3.55 E-lock axle, and Hill descent control.

That was a quick comparison and sure there is more, but that was all the further I researched. Gotta go wrap some gifts........

Edit: Someone on another website had mentioned that You could get a 3.73 E-lock axle with the Off Road package when ordered with the Max Tow package. In his signature he has a '13 Lariat with the Max Tow and Off Road package. So I guess it is so.. Coolness........