Trw .030 over forged pistons.

RustyRatRod said

You never specified a size. And yes, they are stock replacement forged pistons in .030 over. They're not domes or heavy dishes for forced induction. They are stock replacement forged pistons that happen to be .030 over. .030 over is good, as most LA 318 engines are so old now they need boring.

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I didn't specify size? It states the size on the ad, and I also mentioned "size" in my first post. You dont have to have dished pistons for boost. You dont even need low compression for boost anymore. Supercharged mustangs come with flat tops with four valve reliefs. As well as other cars from the factory.