67 Chevy K10 rear spring hangers
 

I have a 1967 Chevy k10 4x4. The front spring perches on the rear leaf springs are rotted. From what I've read 67 & 68 are the same. I've not been able to locate any new ones. I'm open to used ones if they're in good condition. Does anyone know where I can find these, new or used?
Thanks