There’s a massively common problem with the differential bushings made by Ford in their Falcons and Territorys since 2004, which causes a clunking noise that many owners of these cars have come to know. It’s not a guarantee that the cause of this is the bushing, but often it is. Thankfully, the suspension experts at SuperPro have got this covered, and have released a polyurethane bushing to deal with this exact problem. You can shop them over at the store here.