ProComp/Speedmaster aluminum heads

Me personally if I was going for a Max effort I wouldn't be starting with the Speedmaster heads to begin with. hey what the heck if you can put them and get some good numbers out of them but definitely what I wouldn't be looking for out of the Speedmaster head. But I would be hoping for something I can run and get some decent result from. I think anybody expecting something huge from this kind of head with longevity and reliability is going to be disappointed. Again though I would hope for some kind of longevity under a medium Operating Conditioning..