I finally made some progress on my Cheap Case add-on. Ironically, I spent nearly $150 on hardware (all stainless) and stuff. the cases were cheap, $45 for the pair shipped.
Attached are pictures. I still have some cleaning up. The specks and white marks are just dust. I am also adding on some red LED side marker lights. I spent $12 on cheap LED signals, needed the room.


The Nuts and Bolts are all stainless, the L-Brackets are from scrap 4"x2" aluminum angle I had around. I ran a 3/8 threaded rod across to stabilize the brackets to each other.

Some 1"x1" Aluminum Angle I ground and drilled to make a retainer so the bags don't open too far. I am going to line the interior with self-stick felt or maybe thin carpeting.

The Bike is leaning a little and the handlebars are turned slightly, so the bags look like they are angled (especially the right) more than they are in person.

It is not Givi bags, but Givi stopped making brackets for my Cycle, and I am too cheap to spend the $700-$800 Dollars for them anyway. If these work as well as I hope, I may cut off my backrest and add a top bag. One of those $110 ones that look nice in the ads.
I Believe the whole setup will come just under $200 with hardware, aluminum (strap and small angle from Home Depot) and Bags. A bunch of sweat too. I cut everything either by hand, a small jigsaw, or my trusty angle grinder. The bags are not interchangeable left and right, as they are "Hand Crafted" .