Try ebay. and I thought the part number was 65800? Thats what mine says right on the case
2004 Ford F150.FX4, 2" level kit, 275/70/18 Nitto Terra Grapplers. Flowmaster Super 44 SI/SO, 35% tint, Laredo Agri-cover Roll up Tonneau Cover, VHT tinted tails. Pioneer Head Unit, Infinity 5X7's. Thats all for now.