How do I tell a 5.2 from a 5.9

My U-pull-it and cry experience.

1.Found a core support with 5.9.
2.Checked the side of the motor through the wheel well and found "360" on the block.
3.Went back and bought the motor, had to use a seatbelt to lift the motor out with a forklift. They don't supply ANYTHING.
4.Brought it home, took the heads off and found it was a .040 over remanufactured engine with worn out .040 overbore.
5. irritated a lot of members in the small block forum on how I could make it work.
6. Decided to find something else to get the car running, wait, and buy a complete machined 5.9 block from a machine shop in Houston for 650 dollars.

Now I am not saying that used 5.9 engines from u pull it are not a cool idea, because its been proven time and time again. Im just saying, don't pull the first 5.9 you find, make sure that it at least has the factory pistons in it. Next time I do it Im gonna pull a head or look through the spark plug hole at least.