Im guessing they were made by a company for most brands as I had one that was the same as yours with IH on it. If it is stamped Minneapolis Moline I would see about finding an old G1000. You might find one there better than anywhere else. The bracket I have pictured came out in about 1957 and was used on the 5 Stars and then the 445s. The clamps I pictured for the hoses have been used since 1950 and were used up until 1967. These brackets were used on the ZB UB and GBs.