LL shocks are just stupid expensive parts. May not be worth it if you don't tow anything really heavy. You can convert to regular shocks if you buy the regular rear shock mounts, but you'll want to change the rear springs out too.
For me doing front struts, rear shocks, and springs all the way around with OEM on the front and Bilstein on the rear ran about $1500 in parts and $800 labor for my local mechanic to put it all in (southern US). The front was most of the labor ($600 I believe)
I had OEM struts when I bought the car, replaced with off-brand "quick struts" when they started leaking, and they only lasted 1 year before the ride was junk, so now I'm back with OEM on the front. So far I'm happy with the ride quality again.
I've a post with the part numbers I used on the front here. Call the dealer to confirm part #s for your VIN:
https://www.dodgedurango.net/posts/899121/
If you have an AWD the front struts are
not easy to replace. You have to take out the axles to get enough room. I made an attempt, then gave up, then the mechanic told me it was one of the worst he had ever done.