360 ENGINE BUYING CONCERNS/QUESTIONS

I think we are looking for 'new' here... and though it would be nice and completely understandable as to why you would want to tear the motor apart to see.... it's impractical.
So you bring a good LED flashlight and you look down the distributor hole looking for things like clean surfaces No Coke on the distributor drive gear for instance then you look through the spark plug holes for a nice silvery crosshatch cylinder wall and or brand new piston top with a stamp perhaps or some eyebrows that you can see. Brand new freeze plugs... you have to make a deal of sorts, if you can...that when you get it home and you go through it that as long as it's everything that he says it is....it's good.
But if you open it up and it's been run and has used components put into a machined block and **** like that ...you know ...'a cobbling of new used parts'...then it negotiations or return.