I would go into the cluster module via forscan and turn off the notification. I did that with the tpms light, lol. You'll still have the code stored, but at least it won't be bothering you.
Yup, even on the 'Off-Road' packages offered by OEM's had limited-slip as an option. They wised up at some point and made some type of limited-slip/locking differential standard.
It's a mixed bag on the quality of videos out there, specifically Bronco related.
It feels like most are trying too hard, clickbate titles, long-winded videos, most regurgitate the same information over and over.
There is a few off-road channels I follow because they don't draw out the video...
It was about 2400 for sasquatch take-offs... wheels/tires, Bilsteins, labor, alignment & balance.
If you're gonna go through the trouble ripping the suspension apart, make it worth while and get what you want.