I can't really examine the bolts from here, but if you removed them after overtorqueing them you should have been able to see signs of the bolt being stretched past it's yield point. Generally this will show up as an elongation where the threads end and the bolt shank begins. Often times the threads themselves will show signs of damage. Generally torque specs require that the threads be lightly lubricated in order for the measurements to be accurate. If you didn't lube the threads on the first go round you probably didn't fully stretch the bolts even though the wrench indicated 180 ft.lbs. A good example of just how important lubricating the threads is can be seen when comparing the specs for threads lubed with oil and threads lubed with moly bolt lube. The moly specs are significantly lower. eg. A 1/2 inch ARP small block Mopar head bolt used with aluminum heads is speced to 120 ft.lbs. when using oil, but only 75 ft.lbs. is needed to achieve the same degree of stretch when using moly lube. If the bolts look OK you're probably safe, but since suspension parts are one place where "probably" isn't good enough I would replace them with quality bolts as soon as practical.