I think Anth and myself are both aiming a little higher than 600rwhp,we both have standard cranks with lots of work been done to them and yes this is the weak point in both motors as all other parts have beem replaced.we do not see this as a major problem as there are many cars over east with high hp built on standard cranks,without failure,we may be wrong but only time will tell.As for check book racing all forms of racing cost lots of money,time ,effort and sacrifice by all involved,now lets thrash them and have some fun.