eureka!!!! i found a way for the xb808 to have a plastic spur gear. use a losi eight center diff and use a kyosho spur 46t gear and it will work, just add shims to the bottom of the mount to raise it up ,so it doesn't poke through the chassis. Yes....i final got it to work. me and a friend that had a losi eight 2.0, talked about how simliar the parts are and wanted to test to see if some are compatible, and some are.