I bought a 2007 Rav 4 from Japan and while driving up an incline with a sharp left turn the differential and transfer case broke. I have purchased a new transfer case similar to the broken one, but I cannot get a differential to replace the broken one. I have been told that my van was modified because they do not carry a differential . My model # ACA31-5004231:crying . I already bought two and the did not work because I do not have a part number.