The complaint about the rods being heavy is hilarious coming from a board using the heaviest pistons in the known universe!
Surely you are familiar with bobweight calculations and realize that the weight of big end of the rod with bearings has a more significant impact than the reciprocating end? Pay for ONE balance job where you put mallory into a stock crank and it wouldn't be hilarious any more. Not saying that this is his situation but it is always wise to use lighter than stock components on these type of builds
