I had a hundred made up about 15 years ago and they all sold. But I think Jordan baker reported that the Ford 3 ton brake springs work just fine. I see van pelt has them for $2.50 each on their site.
See these threads:
http://www.mapleleafup.net/forums/sh...light=91A-2035
http://www.mapleleafup.net/forums/sh...light=91A-2035
The part number is 91A-2035
From VanPelt website:
91A-2035 Spring - Brake Return (6.25") - Front or Rear 1939-48 Car & Pickup 2.50