From a 340 to a 528/572 Hemi is quite a step. Have you had cars with that kind of power before? Do you have the suspension and drive train that will handle that kind of power? If not set up right, then the car could be a real handful. Or even dangerous.

I personally have had big blocks all my life. Driven and raced them for 30 years. A few years ago I built an Eddie headed 500" stroker. It is a different animal altogether. Even now, with a good suspension set-up, it can break the tires loose at 45 mph if I am not careful. Things happen very fast with this level of power. And you will probably have even more horsepower given the additional inches and the fact that it's a Hemi.

If possible, you may work your way up to that kind of power a little at a time. That way, you your drive train and your suspension can get up to speed.