Kaffenbarger offers custom configurations to meet your needs. The left configuration is "L" shaped with the bottom compartment being with width of the cab. The top compartment is shallow allowing for clear view of the rear window. The right picture has a transverse compartment with an "L" shaped slide out on each side. The top shelf is open to the cab for storage of equipment. Contact Nathan or Rich in sales @ 1-800-869-5832.