Hey i gave my head to repair and I want to know if a stock/original gsr motor has some numbers on the block and the motor. I dont want that guy to give me some crap head saying thats mine.

 

Man you must not trust this guy too much! As for matching numbers, no not that I am aware of. If you were worried I would've marked it somewhere and checked it out when you got it back. Man this world is going t hell!

 

well you can look at the dates stamped right below the valve cover on the front left of the head.