Anything is possible. All Mike is doing with that hone is going in and opening up each individual cam bore to the proper size......that's easy. If the bore is not round or small, you hone it, not a big deal. Since cams have been in these motors before, you know the tunnel is relatively close and it's just an individual bearing that tight or out of round. This is NOTHING like line honing or line boring the entire cam tunnel. You do one of these two options to straighten or open up and entire cam tunnel. Doesn't matter that the bores are different size because when you line hone or line bore a cam tunnel, you open ALL the bores to a common size and have a custom cam ground. A common size is 50mm. That's big block Ford and bearings are common.