in the diagram.... the front and rear are not called racks... they are called "carriers"... so, that is what you are looking for. Recently I picked up two 02 ozarks and both are missing the front bumper/rack. From what I have seen in other places - these are not the most sturdy of all items... which might be why you can't find them on the used market.
Good luck... and if you find one... I need two.. so, look for three...