This morning I started cutting wood so I could make the rear brackets for the storage compartment. The brackets aren't in final form yet, but the idea for these brackets in the back of the compartment is for them to secure the compartment to the floor and also to reinforce the corners of the compartment, so the brackets attach to two sides of the compartment. The brackets will bolt to the wood of the compartment but I haven't drilled those holes in the brackets yet because I'm still working on the exact sizing of the brackets.
Left side, next to the 40 side of the seat. This bracket has a 90 degree brace for the corner of the compartment.
Right side. This one has a 45 degree brace for the corner.
Making the brackets like this should make it much easier for a DIY-er to successfully build the compartment.
Tomorrow I'll cut more wood.