Didn't see this till now, but from what I see, someone used a 2 door cab floor to patch the rear-you can tell because, 1-they plasma cut off some of the floor support, but not all of it. 2-there is a weld line with sealer-all the burbs and crews I have seen the floor is only a 2 piece. you can see the original part line just ahead of the middle support. 3- the inner rocker is also part of the floor from the factory.