I have a 2003 Goldwing 1800 w/a Champion trike kit. W/a Champion vin # 6265. I believe it is also a 2003. I was told that if the flange on the driveshaft that connects to the differential. Has nuts the connecting bolts instead of being threaded directly into the flange on the differential. Then that means it's a Toyota differential. The trouble l'm having is not knowing what model of Toyota differential is used by Champion. Did they use a Tacoma, or a 4Runner or what? I can't just go in to an auto parts store & say l need a pinion seal for a Toyota differential. If anyone knows what model of Toyota differential was used PLEASE let me know. Thanks in advance