Need install help: Snuglid SL

I just picked up a Snuglid SL off Craigslist and it's different than my old Snuglid...and so is the truck. My question is, do the factory rails (with the sliding anchor points) stay in and if so do the tonneau brackets go in between those and the bed or over the top of them?

Any photos of the rails and brackets inside your bed would be hugely appreciated! Snugtop only shows instructions for a RAM which has a pretty bare-bones bed.

Thanks in advance.

 

I'm getting no love on this topic.

Ok..I found out the rails do indeed cover the stock rails. So I guess I'm missing whatever hardware is used to do this.

My question to Snuglid owners is this...what is that piece of hardware? Is it a type of clamp or is it a bolt and maybe a wedge that rides in the stock rail?

Photos would help immensely.

Thanks in advance.