looks like a eagle rod,send the rod back to eagle and they will tell you why it faild or send it to arp they would what to see if was there stuff or the builder. they can tell you if the bolt had the right torque on it.if someone built it for you just call and show them the parts with all the pics any one with half a brain can see what happened.i hope ho ever is a standup guy and stands behind there work.it sucks i have made the same mistake and i have been building engines for almost 20yrs.good luck jeff