Is the stocker supposed to say 2.4 on it? It's in big writing around 1/2" tall.

I'm getting confused now (possibly worried) since pulling the head as the cross hatching in the cylinders looks almost new. The Odometer states 143K on the car, and the person I bought it from hasn't done anything to it (appeared bone stock), but she was the 3rd owner of the car. The pistons look like hell with carbon galore.