It can be done you need a 65 big-block trans for the output shaft and housing this allows you to keep the park feature with the cable in the housing not sure if other parts are needed. I also updated the input shaft to use the modern torque converters.

2003 Dodge 3500 Diesel

1964 Plymouth Savoy White 2dr sdn. 512 stroked, Dominator, New Best 9.75 @ 138.50mph
2019 Challenger Scat Pack 1320 White Knuckle-K&N Cold air filter, Billit Oil catch can, drag radials stock 11.911 @ 114mph