It may be a bit more pricey but MPAC makes a product just for this spot on the Jeeps and dont see why it wont fit other aps. you can mix and match your bag choices and put a lot of stuff there. I believe it is www.springtailsolutions.com
. i have one in the back of the FJC that holds the little stuff like the first aid kit. just a thought. Not much fab work needed then.