External Balanced 360 With new parts still Balanced??

360 magnum pin size is .984 - big chevy .990 - big mopar 1.094 - small chevy is .927 . I have had some engines in my solid engine mount car that were factory balance, some race engine shop balanced, and some where I changed to different weight pistons - no noticeable vibrations or problems - some shifting at 7000 . unless u are racing over 7000 rpm