I know sometimes you can think yourself crazy worrying about every little thing that you say to yourself.........should I have gone just a tad more ? Dont worry about it as it will be fine. Like I said I run these pistons in my 493 at about .006 and its not that noisey when cold. With 3" pipes and Ultra-Flows you gotta really listen to hear it when cold.
And you can always tell them its a Diesel ! Have fun and enjoy it. Ron