Projects Rear Spring rust

So how much rust is too much to use, I have a 8 leaf Model T rear spring that has rust pits on the flat areas of the leafs (pics to follow). I was wondering if they were too rusted to use since they're from a lighter weight car to start with. The car in question that the spring is going into is a 1928 Tudor.

 

Would need to be fairly severe to render unusable. Awaiting pics though.

 

Sorry for the delay....the main 3 are like this on both sides.

 

That's fine.

 

Grease retenion pockets.

 

I like that

 

Have a spring shop look at them. I think I would use new springs myself.

 

Run em.