WANTED!! 74 Duster power brake assembly

Im in deperate need of either the brackets that bolt on the power booster to the firewall and/or the entire brake assembly. I have master cylinder, and power booster, but truthfully, dont know if they are any good. Just bought the car and they were taken off by the previous owner and put in the trunk....WITHOUT the brackets that hold it to the firewall. So at this point I would consider anything.... HELP PLEASE!!!!