Pulled the trigger,2105 Ram crew 3500,hitch install question

I helped my friend install the B&W companion and I was sure glad we had the truck on a lift. That piece that fits under the bed is massive. Cutting the hole is no problem as they supply a guide to make the small starter hole from underneath and the large hole is then done from the top side. Very nice hitch when done. I was impressed. BTW his was a 2014 so a 15 could be different.