Not finding 10" drum spring for 67 GTS

drum brakes rear 10.PNG
This spring goes to the self adjuster lever. It's not a return spring. The return springs are the same, one just goes through the cable guide.
I'll double check which spring I grabbed and took a photo of. My return springs are different looking springs. The photo in the 1967 Dodge service manual also shows two different looking return springs. Springs that were in there I changed when the car wasn't very old with springs I got from a Dodge parts manager. I got the car with 16,400 miles on it when it was 1.5 years old.