I would think about simply buying new springs before I
considered 're-arching' the original springs. To do that
properly they should re-heat treat and temper the spring leafs.
By the time you pay for the labor you could come close to
having new springs. Also when you're looking at 60 year old
leaf springs there in all likelihood will be some wear at the
contact points and supports.
Suppliers like Eaton/Detroit Spring or even local spring shops
will give you prices.
DG


Denny G
Sandwich, IL