Calm down with the special balancer...I am running six pack rods and a forged crank out of the smog motor home 1973 engine...I run 440 Sources china chrome balancer and it runs smooth as a baby's butt....the real reason they are not liked is because they are heavy as crap...they are even heavier and beefyer than the original 426 hemi rods...they for sure won't break..but they will not spin the rpms as fast as lighter rods...thus said I will never see 7000 rpms and mine is not a bracket racer or full time race car...I had mine shot peened...new ARP wavelock bolts torqued to spec and then honed....they worked for me and end up being a third of the cost as some new lighter forged rods..