Lets talk suspension. More specifically, adjustable dampers! Help needed...

Hi all. I have a 2016 TRD Sport DCSB that I tow a lot with. I have a 24' pontoon boat that's not that heavy, but whenever I use it I have 3-4 people with me in the truck. The rear sagged too much and eventually started to hit the bump stops on every trip so I bought some Firestone airbags and an airlift 72000 controller.

The setup works wonder while towing. There is no rear end sag and I'm sitting around 55-65PSI when fully loaded. Looks like the truck at stock ride height.

I noticed the other day while poking around under the truck looking for anything obviously wrong that there was an oil drip down the back side of one of my rear shocks. I wiped it off and checked in the next day and confirmed it is leaking. I got 48k miles with about 10k of them towing a boat so I'm not upset. More spring means more wear on the shocks.

My question is:

Are there any suggestions for a replacement that will be better performing but give minimal/no lift? I've heard Bilstein 5100s are great, but they sound like they're better off-road whereas I'm looking for on-road and towing. 5160s also caught my eye...

Are there any replacement rear shocks that have an external adjuster on the top bolt? I figure I could turn them down while not towing and turn them up when I have pressure in the airbags.

My budget is around $500 for rear shocks. I will most likely replace the fronts while I have it up on the lift so lets say around $1k for everything.

Thanks for any help!

EDIT:

I got looking into Old Man Emu sets and their site recommended the following...

Components in this kit include:

• Front Coil Springs (1 pair x 2885)
• Leaf Springs (2 x CS047R)
• Nitrocharger Sport Strut (2 x 90021)
• Rear Nitrocharger Sport Shock (2 x 60091)
• U Bolts (4 x OMEU53A)
• Driveline Spacer Kit (1 x FK29)

Optional Extras:

• Extra Leaf

Estimated Lift:

• Front: 50MM
• Rear: 55MM

Anyone run this setup?