Gotta say i love how toyota designs their vehicles to still look fine even after years have passed nice truck man

I wish toyota didnt stop making these in V8

Why do you not recommend airbags?

Except for the leather seats.

Your receiver, if you have the tow package with the frame hitch, is rated to pull the 7,000 lb. (4X4) capacity and the vehicle can support 700 lbs. of weight on the hitch, including the hitch weight. A standard hitch in the receiver supports all of that weight on the rear of the T4R. A WDH, like the Equalizer, shifts some of the weight on the front axle and some is moved onto the trailer's axle(s).

If your rear is sagging and you are using a standard hitch in the receiver then a WDH will improve that and your handling as well. When you put weight on the hitch you're lifting the front tires up. The T4R compensates for that by shifting more braking to the rear wheels. A WDH will shift the weight to the front and trailer axles. Air bags won't do anything to improve your control. The weight is still there on the rear. The air bags just put pressure on your suspension to lift up the body and make it look better; it isn't.

Find an Equalizer (or other) WDH installer and talk to them about your rig.

Everything is going turbo. I was looking at the new 2023 Sequoias because you can't get the T4R in V8, figuring I'd have to move up if I needed a new tow vehicle. Here's the new 2023 Sequoia:
Turbocharged 3.4-liter V6 hybrid powertrain
437 horsepower
538 lb-ft of torque
10-speed automatic transmission
21 mpg city, 24 mpg highway and 22 mpg combined (2WD)
19 mpg city, 22 mpg highway and 20 mpg combined (4WD)
Towing:
Limited Towing Capacity (2WD/4WD): 9,300 pounds/9,020 pounds.
Platinum Towing Capacity (2WD/4WD): 9,310 pounds/9,010 pounds.
TRD Pro Towing Capacity (4WD): 9,020 pound

Price is around $59K, if you can find one.

Installed the Airlift 1000 kit a couple weeks ago. So far so good. Installation wasn't bad and hasn't lost any significant amount of air yet. I had it around 12psi (min=5, max=35) for towing my 6000lb boat trailer. Previously it was 15" off the ground unweighted and 12" weighted. With the kit at 12psi it was about 15.5 unweighted and 14.5 weighted. So took out about 2.5" of sag, which should help a lot with trailer tire / bearing wear and tear on the front axle of my tandem trailer!