trying to identify aftermarket 340 Pistons

I know. These are stock pistons for engines in the 68-73 range. He said is looking to build a stock engine with x heads. There isn't an infinite selection of off the shelf pistons for a 340 engine. Compression will be between 8.5 and 10 depending on actual cc volume and milling. It seems a lot of people think the selection of these parts is an r&d project.