The 66 and earlier A bodies had a removable bracket that bolted to the inside of the inner fender. The bracket in the picture I posted is from a 69 Barracuda. My recollection is that the manual transmission 71 and 73 Dusters I had back in the day used the same bracket, and would assume that all 67-76 manual transmission A bodies would use the same bracket, but can't swear to it.