You cannot use a TF column in a AD truck. The column on both series is part of the steering box assy which are different.
You can however, use the shifter box from a 55-59 V-8 truck and/or 56-59 6 cylinder.
The turn signal housings used on TF trucks are the same as the units used on 53-54 cars. You may be able to adapt one to a AD column.
Fred

Last edited by rfs56trk; 09/02/2014 4:19 PM.
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