Boise- did you find your springs?
I had some made when I did the brakes on my 59 1-1/2 ton several years ago.
Still have some if you need them.

Mike. You say to 57, but wouldn’t 58/59 be the same?

~ Victor
1941 3/4-Ton Pickup (in process). Read about it in the DITY Gallery
1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD
1957 3100 - moved on
1959 C4500 Short Bus "Magic Bus" - moved on
1959 G3800 1 Ton Dually "Chief" - moved on
1958 C4400 Viking "Thor" ~ moved on to fellow Bolter