My Whole objective was to clean up the engine fix some leaks make a few little modifications and ultimately stop the truck from leaking oil on my garage floor well I am successful so far I have not noticed any oil leaks yet , but I did something I decided to reuse a questionable head bolt it's the one that holds the military optional oil filler in place it's a bolt with a nut built-in to the top of it , well if it wasn't for my left hand drill bits I would have to take the head off but luckily I was able to thread the broken portion out of the block and pull the rest of it out with a magnet .lesson learned buy new bolt , I guess I will weld a nut to the top of the new Head bolt ,