car wont start please HELP!!!

[allyoucaneat_talon]

well, while i was driving my car just slowly died on me. well this is what happen. i open up the timing cover and found a bolt near a small plastic cover, which i think that bolt been there and my timing belt have been riding on it, you can see markes of what the bolt did to the timing belt. The belt didn't break or anything. But when i open up the valve cover, i felt two rockers that was loose and the rest is fine. I dont know if the valves are bent. didn't open the head yet. But yea, if anyone know what happen or what can i do to fixed this problem, let me know. Thanks. P.S. It's a 1st Gen GSX, also is a JDM motor and is there a different between USD and JDM or should i just get a new 1G head.