if you want to tackle it yourself, good fella tbohar posted this Head Gasket + Timing Belt DIY
skip the parts that relate only to the timing belt, unless you see something there.
inspect to see if valves are seating correctly.
you might want to send the head to a machine shop to see if head is still flat in the gasket area.
Also, recommend inspecting the stud bolts. ideal is to change them , but if it was not removed before, they might be still good (they stretch if removed and torqued down too many times.
will have to change the head gaskets