I 'm not sure if anybody make the three bolt shares anymore, but you can knock the front bolt out of a four bolt share and use it as the three remaining bolts will line up. You probably still have the "219" bottoms, Ford continued to use them after Oliver, I used to be able to get bottom parts through Ford/new Holland when I was a parts manager for a FNH dealer. If you don't have an old timer parts person, then have them start a parts search in PAL for parts begining with "SBP" or "SB" as that was the prefix that Ford put in front of the Oliver/White part number and used it. Example EP7490 shins in Ford were SBPEP7490.