EJ:
I figured you'd have an answer by now. Guess there aren't many '56 transmissions laying around. Anyway, today I measured one in my barn. From the tip of the input shaft to the front face of the trans case is 5 7/8". From the front face to the tip of the output shaft is 28 1/2". Input shaft is 1" with 10 splines. Output is about 1.170" with 16 splines. Hope this helps.
John in Selma, IN
John - "The Hoosier Hurricane"
