Saltillo engine plant stated 5.7 engines "can" have an interference fit on the pistons because of the coating...but I couldn't get any more details on that statement. (1st question, does that work out in practice?)

The engine I tore down still had plenty of crosshatch, no noticeable wear, it had the same clearance most other cast or hypereutectic pistons should....my low resolution cheap caveman dial bore gauge did not detect anything...