no i wasnt going to give him old nuts..thats why i didnt send any cause i didnt have any like them..I had some arp nuts like what was on them but the threeds was different and i just didnt send any cause i didnt have any ARP nuts that would fit..Ok i didt know that the size of the pistons but the guy i got them from said that they was standard Bore Pistons..So i guess you cant trust anybody these days..im just going by what was told to me..So i didnt think nothing of them after that..But way they looked they was all the same size from what i could tell..