Oliver 77 piston sleeve

Does anyone know how big you can bore a 77 cylinder sleeve is 3 7/8 to much? Just asking to see if I can sneak by without boring a block for bigger sleeves
 
I would be very careful, the early sleeves were contoured on the outside and I think you would end up with almost no wall thickness. My suggestions would be to buy a 3-3/4 kit.
 
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