[Master Logger]

I have the same truck as you but a 2018 and did a lot of research before I picked a pullrite superglide 2300 , I don't remember the mount #'s (but I have them in my shop) and i installed the hitch . I have a 39DBRS3 which is 21K also . I have pulled 600 miles doing shake down trips and have had no problems , not saying that it can't be put in a situation that there will be contact , you just have to be alert when making turns on uneven ground . at the pin box you will have to drop the hitch down 1 hole from the top and 6 bolts can still be used and bolt the PR hitch in the rear holes, that gives clearance for the bed rails in a hard turn .
Hope you getting 2 or 3 inch riser on the suspension other wise you will be nose high even with the truck set at ALT height .