[Carnut427]

Remember, you can bore it further than stock also. If you have it bored oversize, I suggest you don't take it out to the max; leave some meat in so the engine can be bored again in the future for a rebuild. Yes, the Shelby blocks have removeable sleeves, but you can leave that for another time also. As for those who are satisfied with 450 hp, some people are and some want more. I'm in the "more is better" camp. Mine isn't a daily driver, and when I take it out I really like the wild motor, whether I can always use it or not. It's just neat knowing it's there.
Build it to what you want, not what anyone else says you should be happy with, whether that's 450 or 650 hp.
My 2 cents,

Dan