I've seen a couple images of these, what I'll call "nerf bars" but can't figure out what they are actually called and where to find them. I love the look of this truck and have similar plans for mine, but I stumbled upon a few pics of trucks with these bars and I love them.

 

There called tubeular steps or sometimes rocker guards depending on application .auto anything, jc whitney, lm trucks, summit, E bay, craigs list.

 

Thanks. I couldn't find anything similar looking under nerf bars and side steps. I like how they tuck in very tight to the rockers.

 

Figured it out. They're called Sport Tubes and I picked up a set of Westin stainless ones for $100 delivered to my door from eBay.