I have a Brand New DSS Racing Aluminum Main Stud Girdle and optional Windage tray. It fits any stock block 289/302/331/347. It comes with ARP Main Studs/nuts and all other needed hardware and instructions. It is all brand new still in the original packaging. It cost me over $550, but I will take the first $350 plus shipping. I am set up for paypal as well [email protected] Aaron