Good evening everyone! I have been looking online in a lot of different places but cant seem to find a way to identify a gen 1 vs gen 2 short block. are there any good tells to see a difference or just part numbers? have a car that I think the engine has been changed but not sure how to tell with the motor in the car. there are some obvious sings like the timing cover bolt and other things in the engine bay have been removed at some point in time.