Is align boring necessary

Torque your main caps using the fasteners you intend to use during final assy. If you have a dial bore gauge measure the the main bore diameters and compare to specs. Next mock up your crank and new oiled bearings, but leave the rear seal out for now. If it spins free there is little or no gain to align honing or boring. Align honing or boring always changes your crank centerline closer to your camshaft. Food for thought...