It's a shame that such great looking guys have to be messed up like that. They should try drowning or suffocation instead. Even hanging leaves a fairly decent looking corpse although a little stretched out. Thanks for the photos.
I think it's #4 based on a comparison of ear lobes. In my view, head #4 has a pronounced ear lobe similar to the gentleman in the photo. Head #2 has almost none.
I think it's the last head too. I see in the first alive pic it looks like he has a small mole on his cheek and there's a spot on the cheek of the last head that could be that mole. DAMN HE'S HOT!