As others may chime in, the tow vehicles' (TV) cargo capacity is a key consideration. He's got to allow for the load on and in the tow vehicle which includes the weight of the Weight Distributing Hitch (WDH) and trailer tongue weight.
I use a Husky Centerline TS WDH that has the no chain setup and has sway control built in the design. My dealer tech did a great job on setting it up and I bought it USED from the dealer. I downloaded it's manual and verified it was set up correctly, it was. I bought a new TV that only had a +3/4" difference in Hitch height but of course had a significant change in suspension, 2008 Explorer to 2019 F150, both with towing package. I connected my WDH to my TT, drove to a flat parking lot and took measurements connected, disconnected, with and without WDH spring bars. All were within tolerances. The manual is very clear on the set up. I have full confidence in installing this WDH on any vehicle or trailer.
