There was a factory set up offered for TF trucks, quite rare and pricy if you find one. Any other PS conversion will require modifying the existing column or replacing it. I used a Toyota conversion. Installed it when I did the V-8 conversion in 2000.
It works well. I would estimate that a PS conversion kit is currently about $750, Disc brake kit with booster, etc, about $700. A complete Mustang 11 front end is probably close to $2500.
labor not included.
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