Finding out what lowered springs I have

[Gunnin4ya]

I bought a just short of being called a basket case 65 swb. The previous owner is zero help with information about the truck. They put lowering springs on it front and rear but don't know what drop they used. I need to order shocks and make sure I get a good set up on it. Any ideas of how to either measure the springs or something to figure this out? Really don't want to have to buy new springs just for this. These are brand new but can't see a part number on them. Any help would be great.