There's enough adjust-ability in those 2 pieces of hardware to hook it to a monster truck or a subaru.
Park the trailer level, back the truck up next to the trailer hitch and flip/adjust that combo until the ball is maybe an inch or so high of perfect, assuming you'll still get a little suspension drop even with the wdh tensioned up.
If you trailer is tandem torsion axles, get er as close to level as you reasonably can. Torsion axles don't play well with nose high or low as one axle takes more load.
If it's tandem leaf springs, not as critical. +/- a couple inches overall is close enough if you cant get er right on.