57370 Installs easily on a 2017 4X4 frame. Pulling the fender stop out of the bracket, slipping the strike plate into the stall, loose U-bolts on top and 2 nuts and bolts on bottom took about 1 hour from start to finish. Expect a difference in driving when empty isn't bad. Runs well, but I'm satisfied. I weigh about 1800 pounds and my fifth wheel works great under load.