Pistons

No need to clay them, bighead is right. They are backwards. The quench area faces away from the plug. That's the whole purpose. To create quench of course, but also to direct combustion gasses toward the plug for more complete combustion and toward the exhaust valve as well. The way they are installed, will do the exact opposite and possibly create a catastrophic engine failure. That would suck.

bighead is a noted Mopar racer and expert in this part of the woods. He would not steer you wrong.