I am very excited about this... I just found a replacement CD cartridge that works for Discovery II, 2003-2004 Range Rover, 2002-2003 Freelander HSEs, and some P38A Range Rovers. Instead of the $$$$ that the dealer wants (and yes, they are even expensive when you pay cost), I found a 2-pack at Circuit City for $18.96. The part number I got is KAE216C. They are manufactured by Alpine. The set I got are see-through with red and yellow backs. I don't know if there are other colors available. I just thought you would all like to know!!!