Just bought a hr ute and looking at putting rb30t in it. Just wondering what the difference between a8 and stock na rb30 are. And what sort of power an a8 crank can take before having to upgrade looking at running 20 psi at the most. Thanks for any feedback

Both the same apart from A8 has lower comp pistons and a different cam, oil pump might be slightly different as well.. Crank will never be an issue