I'm looking into getting a roll pan for my truck but can't find much info on them or how to install them. Is there much modification that needs to be done to mount them? Can you use the stock hitch with a roll pan or do you need to get a hidden hitch? I am going to paint it and leave the gaps for now. Once I have the money, I want to get it filled in and blended to the body. Any info helps. Thanks.