What top case fits the bracket under rear rack.

[Southern7]

I installed my Shad top case today and removed the flat plate on the rear rack to drill it. It looked like a Shad base under it, bot was not a match to my SH45 case. Anyone know what brand/model fits it. Look under the flat rack and there are 2 slots on the front and one on the back.

 

[Combo]

I installed my Shad top case today and removed the flat plate on the rear rack to drill it. It looked like a Shad base under it, bot was not a match to my SH45 case. Anyone know what brand/model fits it. Look under the flat rack and there are 2 slots on the front and one on the back.

The Yamaha Factory Top Box.