Welcome to the garage Renzo!
Check out the tech tips and see if you can find the info you need there.
https://www.stovebolt.com/techtips/
I would start with the steering box, and tie rods. Radial tires do drive better than bias ply, but I suspect it's more in the steering box and tire rods.

Don

Last edited by 2-Ton; 04/11/2019 3:46 AM.

1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
1946 2-Ton grain truck
1946 3/4-ton pickup,
1953 1-ton pickup
1957 1-ton flatbed dually,
1954 Pontiac Straight Eight
Of all the things I've lost in my life, I miss my mind the most!