This afternoon I swapped out my treasures from this weekend's swap meet. The glove box and cab light went in easily enough. The seat belt was not much hassle either, once I got the seat out of the way.
The new belt is simply bolted to the floor of the cab. I wasn't sure about this design until I read over the entire installation process. I was worried that the bolt could pull back through the hole in the floor. But to prevent that the company included a 4 inch round washer. It spreads the load out to more of the floor panel. My only hassle was finding a spot under the truck that was flat enough and large enough for the washer to ride flush against the underside of the floor.
Once I got everything back in place I cruised the neighborhood for a while.