445 cylinder block question

I have a pair of #10A5834B cylinder blocks that I got on a pallet of misc. They are 3-3/4" bore. Book shows they should be 3-5/8". Were these bored out .125" ?? Did Moline make pistons that big or were they aftermarket? Anything available anymore?
 
A variation of that engine was the 220 that used 3.75 as standard bore. Used as power unit and in U302. Not sure about your jugs if overbored or original 3.75. I found some NOS original 3.875 (3 7/8) pistons that were MM overbore a while back I put in a 445 I pulled. These were available from MM.
 

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