I'm not sure why you'd try to make that kind of power on a factory block. And I think I'm in the minority here when I say that I believe they can handle more than people think. I also believe things like girdles are basically a waste of money. The right and good machine work with head/main studs will go a long way, but not 1200hp imo. And you already seem to know this, so why possibly waste the cash? I wouldn't go over 800-900hp... I built a Procharged 496 last year, and even with a little D1SC I know it's more than capable of producing factory block breaking power. I'd reassess your block situation or power goals, before continuing.
