?? sixpack rod weights? and ly rod weights?

hey guys, anyone know the actual weight of the six pack rods? also the weights of the ly rods? having one heck of a time tracking something solid down on google... also the weights of the factory low compression flat tops would help again.
I have a 440 with six pack rods and low compression flat tops, want to figure out what the weights of everything is so I can figure out something as far as rod replacement/pistons to up the compression without doing a major balance job. I know I may catch some heck from someone on here. however for some reason I thought you could play with the piston, ring, rod weights within 40-50% of the total mass of whats already in there as long as each set is weight matched to eachother..? without touching the crank..
thanks again