i would feel completely comfortable with eagles h beam rods at 600horse i built one motor 4cyl to 760 horse with boost and nitrious on eagles and the motor never failed. if i was gonna build a 7m for under 800 horse they would be my first choice. good strong forged units, good rod bolts, decent tolerances out of the box and no worries about stress and fatigue of the stock units. one of those you really cant go wrong upgrades versus stock.