You took the front cover off correct? If so put a 2x4 under the cam chain galley hole and start wacking with a big hammmer!! it should lossen up. You might also want to try putting some pb blaster or better yet sea foam deep creep into the holes with broken studs to losen up the grim holding the head to the shaft of the bolt. If your in a pinch i have have a set of turbo head bolts that im replacing. I dont know the history on them but just pay shipping and they are yours. But like others have said. ARP is the way to go. you can get them off ebay for like 140 shipped.