Balancing a 360 internally

Yeah, internal balancing isn't quite that simple. You need to add heavy & expensive mallory metal to the crank & figure additional time costs associated with it. Better alternative now is replacing the crank with an internally balanced aftermarket one. But if this is a low budget build & you aren't making radical changes, keep the bottom end stock & use the money where it will make more power per $ for you. Cam, intake, heads...