ermariachi,
its the head gasket. period. Everything beeing the same, it can not be anything else that is made out of metal.
I had to replaced an lmost new felpro headgasket because cooling liquid was oozing out of the head bolts. It was brand new and had not been abused.
After having replaced so many felpro head gaskets I decided to give the SCE Copper headgasket a try, with the silicon beads around the water passages and
oil holes, which is the weak point.
I also had the head shaved to have them absolutely flat.
I have driven the cobra after that very, very hard and no issues with
oil or water leaks like before.