It's a Duramax and 4x4. I have put it on a cat scale and the sway pro puts me back at the same front weight as unloaded.
Honestly the safety is a big part of it for me, but also the ride. You can hook it up and leave them loose and tighten each link and drive. You will feel the difference in how the suspension works together and you get a smoother more controlled feel to the ride. Especially on rough interstates and roads. I like to be as smooth and comfortable as possible.
I run my tongue weight right at 13%, give or take depending on how much we packed for said trip
Good luck!
