I looked at these and admittedly they do look very nice. I know a 'Master Tech' person who could probably put these on for me? I did watch a YouTube video of a person installing these; it looked like he was replacing factory installed power boards tho??? These boards you are recommending are for vehicles that have NO previous power board installed?Running boards that come equipped on the Denali look nice, but their location is only 5" below the door threshold which makes them virtually useless. I removed the OEM running boards and replaced them with AMP Research Powerstep running boards very happy with the AMP running boards.