https://www.etrailer.com/Accessories...All%20Products
I put this Curt Brand in Otis my avatar which is almost the same configuration as the B&W you are referencing. I made all my own mounting brackets since it was a 1 ton cab and chassis frame.
It was not all that hard to fab, you have to make sure you fab so you can get it installed if your bed is still in place.
I cheated and had 2 young bucks to do all the drilling, twisting, turning and grunting at install time. Went in just like it was made for it.