67 Dart Leaf Spring Rebuild Kit Question

Hi,

have bought a Leaf Spring Rebuild Kit from Mancini Racing.
It states, that it can be used for 1968-74 All Small Block/Big Block cars.

I now dismantled my springs from my 67 Dart. There are no zink plated metal plates in between the leafs - but the rebuild kit includes them.

What should I do - rebuild the springs without using the metal plates, or should I add them ? Would it have any effect on the suspension ?

Would you paint the areas, where the leafs touch each other ? Any ideas what kind of paint to use ? Has anyone experience with powder coating ?

Thanks,
Lars