Got mine from the dealer at time of purchase (June 2005). $225 and $110, which included installation. Radiator screen is secured by 4 screws at tabs at the corners.
Oil cooler screen mounting is a mystery. It sets loosely between the cooler and the fiberglass, and in fact can slide from side to side. I haven't examined it closely, but I suspect the cooler has to be removed to install it. Good luck!
Jerry