Mopar 360 Performance Shortblock
I know this doesnt apply to the current crate motors or the topic exactly, but my 360 was the from the early 90's commando series. I took it apart and checked everything. It was entirely spot on, but it was also built by chrysler marine and industrial, and was a totally new assembly - not used.
I've not heard good things about these current short blocks, so if I were to buy one I'd tear it down just like I did with the commando motor, just as a regular course of activity, and check it over completely.