With a mid-sized truck you are in a gray area. May or may not need WDH depending on your suspension. I suggest measuring the truck height at the wheel wells, have 400#s of friends/family stand on the rear bumper and measure again. Put a bubble level on the bed rail. You'll still have to make a judgement as to whether the sag/rise is enough to warrant a WDH. For sure get the friction ant-sway if you decide against the WDH. FWIW, I tow an SD with a Frontier, no WDH. I needed to remove one
propane tank to reduce tongue
weight.