modify 65 column dual cable shift for later single shift 904

Pull in and out on your old trans input shaft to see how loose it is. Then drop the valve body, remove the front band adjuster, remove pump bolts and gently pry between the front drum and sun gear shell to push the pump out. Spray wd40 around the front of the pump first. When the band and drums fall out, 95% of your trans problem is in that pile.