what is the package for HD towing with the expedition

For the 18's this is what is included / A beefed-up Expedition ready to tow its best-in-class rating of 9,300* lbs. • Heavy-duty radiator • Pro Trailer Backup Assist™ • 3.73 electronic limited-slip differential • Integrated trailer brake controller • Two-speed automatic 4WD (4x4 only) with neutral towing capability *Best-in-class rating of 9,300 lbs requires Expedition 4x2. Maximum Towing Capacity: Expedition 4x2 - 9,300 lbs. Expedition 4x4 - 9,200 lbs. Expedition MAX 4x2 - 9,000 lbs. Expedition MAX 4x4 - 9,000 lbs.

I posted the information which will take a while to show up. You can also find this information on the Ford website in the options.

I thought there was an added Front stabilizer as well, and is the 3.73 diff on non Max Tow Options as too or specific to the Max Tow only?