Had a slant six, now V8, Can I swap Power steering brackets?

I have a 71' Duster that originally had a slant six. I now have a 318, but the original power steering pump bracket won't work on the V8. Can I rob some brackets off of any 318? Or, do I have to have brackets that are pump specific? I'm thinking in 72' or 73' they went to a different bracket system on the power steering pump, since on the 71' it won't work, yet on my buddie's 73', he was able to bolt his pump right up to the v8.