Stock height springs on my 66. In fact they are 5 leaf and the originals were 6 leaf. They are Espo's and the second photo is 10 years after install. Yes I have 15" tires on it in that photo and in the first photo, 14's on the front and 15's on the rear.
Now, my 70 Swinger has stock springs with a leaf added by the previous owner. It added height but it does have a fairly harsh ride. Yes, I have 15" tires on the back as well. ( and 14's on the front) I would like to change them out with Espo 1" over's.