I'm not trying to be a negative nancy here but 453hp out of a .030 over 350 is really pushing it. what heads are on it? Do you know the builder? If it does make that much power it's not going to behave that well driving around town. I have almost the same setup. .030 over 4 bolt main, dart pro 1 aluminum heads 2.02/1.60 with roller rockers, 650 double pump. Mine was built by Folks in Norman. It made 373 to the flywheel on Folks' dyno. Like I said, I'm not hating. Its awesome if it makes that kind of power.