Eagle Cast Stroker Crank- Problems or No Problems?

It's a Scat, but I know of one cast crank that makes 530hp NA, and he runs another 175 with of NOS on it in a modified stock block. It's a street car, and he races it roughly 25 times a year. He's in the Pinks All Out in 2 cities this year. I see no issue making 600hp on an aftermarket cast crank. We are not talking factory stuff. They are really a decent part. Not a Callies... but damn good product, and all cast cranks are very similar.