Then check out our rear seat delete kits! Its a quick way to take 36 pounds off your Mini by removing the rear seat components and replacing it with our Shrader Performance Rear Seat Delete Kit. These things are durable, made from 3/16" thick ABS Plastic with a textured surface and heat-rolled edges, this provides a nice hidden storage compartment for your valuables and increases interior cargo space. It will not break or crack under pressure, and it flexes to absorb heavy weights. It uses factory bolt holes for installation. If you have racing harnesses such as the Schroth harness, you will need the kit with grommets to provide access to the seatbelts.

We have had this kit on Helix mule#2 (my car) for some time now and are happy with it.

http://www.helix13.com/mini/products/interior-exterior