He's working on a 2nd series. He sent me a photo of how the arms are attached on the shafts and how the linkage is attached to the arms. The front arm is pointing upwards and the rear downwards. I'm thinking if a 55 bell can't be found, replacing the cover off a later model tranny that has the arms downward. UNLESS the shaft on the front selector can be removed and rotated 180 degrees.