Thanks for posting the pictures.
I asked Calimero on the Guzzi site what the internal dimensions were on his. He said 95mm (3.75") Wide, 152mm (6.00") High, 350mm (13.78") Deep. It's a nice looking container but not large enough (particularly the width) to fit the items I need/want to carry. That is why I went with the 6" PVC tubing.