I may have at least part of what you want. Many years ago I bought what appeared to be a new brake booster that I thought would fit my 69 Barracuda. As it turned out it was too big around and came in contact with my valve cover. Later I was told it is for a 73 A body and might work for you. Can you attach a picture of the booster you need looks like? If its what I have I will pm you. Sorry, all of have is the booster, not brackets
