57-60 f-100 springs

Ok so I have my '59 f-100, wore out/ shot, springs, king pins, shackle bolts, well, actually the whole thing aint in too good of condition. I plan to replace the k/p's, shackle bolts yatta, yatta,yatta! Can anyone tell me if anyone makes a 2 leaf spring like the one that posies makes for the chevies? I've exhausted my sources. Should I simply be going to a spring shop and have mains built with reversed eyes, clean up the rest of the originals and install. If so what would a person coat the originals with so they don't rust all up again? What would not get sticky and bind while they are working against themselves? POR 15, can one purchase the round pucks like the late models have, drill holes and assemble?
Any and all advise will be appreciated.

Fenderless

 

Sacramento Vintage Ford makes mono's for that truck.

 

I have some springs all four if you want. I'd think about sellin them to ya...?