318/360 Crank/347 running on Dyno

RAMM said

Federal Mogul also offers the right piston under part # 285np I believe. I would use 285cnp next time just for the coated skirts. J.Rob

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So, it's the 285np with sixty thousandths removed off the top? Where can you get them??

Do you just turn the 360 crank down to 318 main size??