I could not find a topic search function.  Is there one?

I have a 55 wagon. I am just starting a rebuild. I like the ride height as it is; very slightly higher in the rear. However, it is only higher because someone flipped the shackles.

Can someone suggest a factory spring, that I can order, or possibly something late model that I can get from Pic-a-Part, that will get me the current ride height but allow me to put the shackles back where they belong?  For this application stiff is good.

TY
Ray