External Balanced 360 With new parts still Balanced??

Yeah the stock piston are a really light cast material meanwhile the KB and icon are forged. I got the 474 from the "How to Build Big Inch Mopar Small Blocks" book by Jim Szilagyi. True the hot rod magazine could be about making big numbers for a short period of time and not actually geared to someone that gonna run it for multiple passes or thousands of miles.