For the RL 3.5" Lift -
https://www.readylift.com/3-5-sst-lift-kit-2019-ram-1500-4wd-1.html. Shop installed everything but the 2" preload coil spacer (just the 1.5" top hat spacer).
I believe part # for Bilstein Ride Height Adjustable shock for 2019-2021 Ram 1500 is 24-232203 B8 5100 (others on here can probably correct me if I'm wrong). With the adjustable shocks can chuck the RL 2" coil spacer and set adjustable shock clip setting to 4 or 5 to provide the 3.5" lift all around. I set mine at #5 (you can see pics in my signature) and I believe setting #4 gives a little bit of rake. I didn't install new shocks in rear, they're factory still. That's it, other than adding 1.5" Venum wheel spacers to alleviate UCA rubbing. I kept my factory wheels with 295/65/20 NRG tires...These friggin tires are HUGE at over 35" diameter, so they'll definitely rub with my setup...Had to remove front mud flaps and carve out some areas on plastic fender well linings. Can pretty much turn full lock with exception of full right on highway clover leafs however, I'm starting to wonder if this is not rubbing but something with steering column/breaking...It's kind of weird and I've been trying to read forums talking about steering column issues/vibrations with turns, so IDK...Other than that drives like a dream.