I installed this hitch on my 59 & it fit perfect. It appears (per other reviews) to fit many older trucks (50's, 60's,70's, 80's....) Not sure if it would fit yours.
https://www.etrailer.com/Trailer-Hitch/CURT/13028.html

I posted pic on there under my review. "Festerhairball"


1959 3100, original 235/3 on the tree w/overdrive. Carter YF 2100S carb, 205/75/15 w/front sway bar