The reason you can't find it is because you probably don't have a blown head gasket. These motors are the super champions of never blowing a head gasket. You have better chances of getting struck by lightning 5 times on your big toe than needing to change a head gasket. That said..it can happen, it's just super rare.
Please tell us your symptoms and maybe we can save you a bunch of extra work and effort in getting all the way down to the block.
LIM gaskets are common and can leak coolant
SC to LIM gasket can leak coolant into the motor
TB spacers (if added) have been known to leak coolant into the motor
Basic HG is going to be pull the SC and TB, then the LIM and you are at the heads for the gaskets.
