Side Bar Identification

I purchased a set of side bars for my 95 YJ. I was told they had been bought new for a YJ and never installed.
I have turned these things every which way and can not figure how to bolt them up.
There is no branding any where on them so I can't research install directions.
I am hoping someone here may recognize the mounting hardware and point me in a correct direction.
The brackets shown on the left end would fit under a body bolt near the front tire but is too wide for the one near the back tire. I have no clue what to do with the one on the right. Any suggestions will be greatly appreciated.
By the way, this isn't my first rodeo. I am 63 years old and have been twisting wrenches my whole life.
Thanks in advance for any help.

 

They kind of look like under frame mounts to me but more like body type mounts as well I have a set similar but they bolted to the side of the frame on my YJ. Mine don't have the 90 degree angle pieces that yours have though they're just the 3/16 flat steel with four bolt holes drilled through good luck

 

I kind of got side tracked and am just now getting around to bolting these things on. Could someone who has side bars similar to these post some underneath pictures so I can see how they are mounted? It can't be that complicated. I just welded them straight to the frame on my old '81 CJ5, but would like to bolt these up right. The piece on the rear will fit right under the body mount, but I have turned the front piece every way but loose (well, I actually did turn it loose because I got frustrated with it) and I still can't figure out how it is supposed to go. With the angles it seems that the only thing it could do is mount to the bottom of the floor board but it lands right at the front body mount.
The bars them self are not deep enough to bolt to the frame they are just long enough to bolt to a body mount and then they will be really close to the body.
Any pictures showing mounting hardware would be greatly appreciated. I am sure I could fabricate something if I just saw what it is supposed to look like.
Thanks.

 

Found these exact nerf bars through a couple of vendors, however none seem to have a PDF of the installation instructions available for download. Perhaps you could contact them and see if they will send you a copy.
https://www.ebay.com/itm/Black-3-Ro...g-Board-for-87-06-Jeep-Wrangler-/332622791721
https://www.ebay.com/itm/FOR-87-06-...IDE-STEP-NERF-BAR-RUNNING-BOARD-/401135587886
https://www.protuninglab.com/stepb-3-031-bk.html

 

Yeah, that is them. You did better than I did. I couldn't even find that much.
It may not have a PDF but I can see that I have one piece missing. The flat piece with the three holes. It looks like the center hole has a nut welded to it.
Thank you.

 

Well ... Duh .... I do have the flat pieces with the three holes. They are bolted to the end of the bars along with the angle iron. Now if I could just figure out how they are designed to be bolted up ....