no i dont think the mechanic did a compression test , but i guess he was pretty sure that the heads werent cracked or anything, taking his word for it -.- he IS ASE certified and works for a ford dealership so i hope he knows what hes doing as for the oil it wasnt milky at all, there were no signs of cross contamination in either the coolant or the oil even when i went to go look at it with the block torn apart all the oil seemed solid black.
im almost sure that the intake isnt cracked either, because 1.) it wasnt showing any signs of a leak from above or behind, 2.) it looks like the stock intake burst and left nice rust everywhere and a huge hole in the hood cover underneath the hood, so now it has the newer intake on it with the aluminum crossover and it looks fairly new, granted all this was done before i purchased the vehicle.
the mechanic still has to wash off the heads and install new valve seals (for free ) and now i just gotta come up with some new gaskets and stuff