Arias has been around since the early '70's and one of the most respected names when it comes to forged pistons. For a long time they dominated the market for custom applications like turbo/supercharching or nitro or just durability. Used to be very expensive but more affordable today with lot more recognised brands offering competition. High quality, very precise manufacturing, easy to balance and reasonably light weight for high RPM use
Good insurance to make Ford engines last a little bit longer....especially Clevelands