Actually 55-60 year old trucks don't ride that bad in stock form. Many things to consider. As parts such as shocks, springs, king pins, tie rods, and steering boxes wear out they don't ride and steer very well. When ever you add aftermarket parts to the mix they can cause other related components to perform poorly.
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