yes on the 400. but, I thought the 383 is freshly bored @.030. what do you really have.
I did not bore it the guy I purchased it from did several yrs ago the block sat so there was a little surface rust in one cylinder he thought could be honed ,after he took a closer look ,he thinks it should be bored,my luck, that is what happens when you're not mechanically inclined and you buy parts^^ what he said