I also have a STOCK 454 for sale, runs but is tired. Only $800.00!!!!! Complete from Carb to pan! (Includes all Automotive Items too. IE; Smog Pump, water Pump, smog equip., exhaust, etc). Block says High Performance on it, casting number shows it can be a 2 or 4 bolt main, I haven't checked yet. Heads are oval port.