I am rebuilding my brothers 1995 Johnson 60HP outboard due to damaged pistons. He took it to a friend that worked at a outboard repair shop and they pulled the head .... now 3 months later it seems that the head bolts are missing...... Is there anything special about the bolts or are they just a grade 8 bolt? I have tried looking online for replacement OEM bolts but I cant seem to find any. The OEM number is 0322323 does anyone know where I can locate proper bolts?