Make sure you get B&W rails/frame brackets as well. My current and last truck didn't have puck system either. On my '15 went w/ Reese rails/frame brackets and had a Reese hitch. All was okay w/ 5er we had at that time. same truck new 5er, upgraded hitch to B&W 18k Patriot. Then a year later, upgraded truck to a '17 DRW and went w/ B&W rails/brackets and oh man what a difference in thickness. All I can say is Wholly mackerol!!!!! Talk about beefy!!!!!!
Had a friend help me install both sets and we were able to get all but one torqued to spec due to where/how it's located and unable to get torque wrench on nut. So I just zapped it a few times w/ a high tq impact gun. Knock on wood, ok so far.