A pair of Nissan running boards removed from my 2015 King Cab last year, at 16,000 miles. Great shape.

Bolt to body behind the rocker panels with factory studs.

I'm 6'3", so no need for the step up/down!

Will they fit Gen 1 or Gen 3? I don't know but I can get dimensions (overall length of running boards plus locations of mounting brackets) if you want to compare.

Due to awkward size/shape best for local pickup but I can look into FedEx if you want.