Bbc vs Sbc power steering brackets

[Sandtrap9072]

So i have a 1972 gmc jimmy with a 1973 or later 454. When i was up north a couple weekends ago i noticed that my power steering pump was slipping. It turns out the bracket that mounts the pump to the motor broke. After pulling it apart it looks like whoever put the big block in the truck used some bracket (im guessing a bbc bracket)and tried to mount it to a sbc power steering pump. My question is, can you guys tell me if there is any difference between the sbc and the bbc power steering pumps and brackets? Please feel free to post pics of your setups, any pics would help me greatly. ill post some pics of what i have as my setup shortly.