Anyone know where I can buy these forged pistons off the shelf made from better quality material.

Thanks guys
I will try some of thise you have mentioned.
I disagree that the magnum won't hold 800 for long. It's been running 800 for nearly Two and a half years as well as my other magnum. They both have survived well apart from breaking factory piston skirts. It's not like 800 from a NA Torque monster. My engines are turbo and made all the power very smoothly and don't rev past 6000 to 6500 rpm.
They have survived well