I ended up with two complete sets of bags and mounts. I had the red set you see on this thread painted to match my 650B model and I FINALLY got around to picking them up today and...... got them mounted.

Working 10-12 hours a day, 6 days a week gives a fellow little time to wrench.
The bags and mounts are for the XS750 and weren't a straight bolt on for my bike. I had to drill one extra hole in the bag and two extra holes in the mount. (for each side)
Here's where I'm getting started.....notice the really nicely painted mount???? Once I figured out I'd need to drill a couple of extra holes in it.....I put them up and brought out the ratty set so the painted ones can stay intact.
Here's what the ratty set looked like. One end attaches to the upper shock mount, and there's a bolted connection to the rear rack.
Now I got a bit lucky ( not 5twins lucky..

..but lucky for me) and found the second set on eBay, The fellow wasn't listing what motorcycle they came off of.....just had them under vintage hardbags and I got them so I'd have a spare set AND this neat little section that connects the two mounts.
I like the look......and see no reason to take them off while I have the bike. I like to carry spares and tools and this is just the ticket.
They ended up NOT being cheap.....the decals alone cost almost twice as much as my Plastic Coleman Cooler Bags but I think they were worth saving.
I didn't have time to take any glamour shots....I had SO MANY honey do's to try to finish

while I was trying to work on the bike at the same time.....I'm beat but happy with the way they turned out.
Take care.....have a SAFE summer...

...Gordon in NC