I have had a couple of trucks with that large bottom chrome band....and it looked great until you pulled it off. It's tough to clean properly under there, plus the holes for the clips just invite rust.
The paint looks too good on that one....I would be hesitant. And the way the tailgate fits, all the crinkles in it and the damage marks on the wheel well in the box have me suspicious. Could be a sow's ear turned to a silk purse.