Why would they send used parts when customer orders new ones? Also why would you just send a wrong part and hope to god the customer likes it? On another note, if you wanted ARP rod bolts and didnt get them you should of sent them back got a refund and bought them from summit or any local speed shop near you. Anyone shop can order them and give them to you. If you were isntalling oem's and they were breaking something tells me id of said fuck this I will wait till I put ARP's in here because chances are these are going to break. Sorry to hear about your bad luck with Z1 and your car. Hope things get back on track.