Where can I find a drum brake hardware kit?

Hey!
I´m currently looking for parts to buy for my Dodge Dart GT -68, I´ve figured most of it out but I´m having trouble finding hardware kits for the rear drum brakes (discs in front).
I´ve concluded that I have 10"x1 3/4", and I´m gonna buy new brake shoes from Classic Industries (Link).
The trouble is that I can only find hardware kits for 9" drum brakes.
I want new springs, clips, self-adjuster and anything else that might be worth replacing.

Can I get these from newer models, or don´t they fit the small bolt pattern that I have?