You get the rails and bolts with lock washers. Your frame is already drilled and threaded. They literally just bolt on. It took about 15-20 minutes to install them.
I think the guy is installing the rails you want to check out in that video.
From the Trail Hunter videos I've seen, I believe they are the ones used and the TRD Pro uses the tight mount rails that come up the sides a little. The PT925-35242 version