Brake shoes HELP!

Hello everybody it’s been some time since I posted a question on here but I’m on need of some guidance.

I recently got my second MOPAR, it’s a 74 Dodge Dart Swinger with a 318. My rear end recently locked up so instead of rebuilding it I decided to try and save a couple bucks and get a different rear end I found on Offer Up. It’s from a 68 Dart with a /6. It mounted right on and everything seemed fine until it was time to set up the shoes. I found out my old rear had 10” shoes and the one I swapped has 9”. The problem is when I find 9” shoes they are missing a hole for the lower spring that hold the shoes, can it be that the 68 springs are different if so does anyone have a photo of how it mounts? Thank you!