9" Drum Brake Hardware??

You can try Advance with a H7037 hardware kit and H2516 and H2517 self adjuster kits. I just bought some parts there for my 10 inch brakes and I know they had parts for the 9" brake set too. I have noticed that a lot of the spring sets they sell don`t include the spring for the self-adjuster so you may have to buy that one separately.