The side cover is completely different on the Saginaw transmission. The spacing of the shift levers is wider than the original so
fabrication and bending of the shift rods will be necessary. 60's columns were different also. Good luck even finding those components.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine