Help making rear mount for top case

[willajabir]

I know I saw a picture somewhere, but I can't find it.
Someone used 90 degree metal strips and bolts to make a mount for the givi or shad case.
Could someone tell me the size of the bolts needed to mount the rack?
I was thinking they were 8mmX50. Then used metal tubing to support the rack.
Since I am having to use the cage to go shopping, I didn't want to make multiple trips
Thanks for any help/direction.

[willajabir]

Got it. The Givi racks are not available yet in the U.S. and Honda was a back order here.
So, I got 4 m8 bolts, 4 one inch spacers, the shortest piece of aluminum angle stock and now have my Givi case mounted.
I found the information on the Shad case website. Thanks to anyone who was helping search.