I have recently purchased a BJ70 with a 3B motor and I am now having to rebuild the transmission. I need to replace the 1st gear and the 1-2 synchro assembly, unfortunately I am unable to find any parts or a good working used trany. I have considered getting a brand new transmission but the input shafts are different and I am getting conflicting information as to whether or not I can put my input shaft into the new transmission. Any info on where I can get parts would be GREAT!