I have a dana 60 rear that I am not sure what it fits I have tried to identify by the numbers off the tube it appears to be a 9 3/4 3:54 gear out of a 1966 (can't figure out what body). The numbers on the tube are 118 6B1 2829 7 and an A9 23 1. The ring gear # 12/4/65 Dana 32503 A3D25 46-13. and the Posi 25 124 X 1/7/66. The casting numbers on the center section are 2018188 and 1968618 034165 60. Any help would be greatly appreciated. Thanks