stainless hidden bed strips ?

[wutnxt]

How does the hidden bed strip work ?
Are the bolts mounted to the back of the bed strip or does it slide in a track or a groove on the back ?

For my prostreet truck box i have over sized tubs and alot of steel in but i wanted to put some bed strips and wood in for a old school look. If i use the bed strips with holes i am going to be hacking alot of it up to try and match it to my bed supports because all the factory stuff is long gone. But if the hidden bolt set up slides around on the back of the track that would work way better. It's about 20" of bed in the front and about 20" of bed in the back
Anyone use it for this type of application ?

Any other ideas for this ?