Machining a block, how it´s going???

hi, If there is a doubt on bore sizes, then he needs to bore the worst one first. then he can tell you what size the motor will be.I have done this before, when confronted with a bad bore. test bore , then decide what the piston has to be.once you buy pistons, then block has to be bigger, you're stuck with pistons you don't need. just food for thought.