Small Block X-Head Gurus in NC ...

Hey they will work fine for what you want to do. Heck I ran 11.82 with a set over 40 years ago and lots of guys have gone a lot faster than that. That damn cast iron leaves a bad taste in your mouth when you are grinding on it.
I've done 11.4 with 596 cast heads (smog heads), but I have the slowest stroker on the internet...