Alright, im wanting to know what i should do to the motor while it is out so that i dont have to pay a mechanic $600 to pull my engine in 3 months to change something small and simple.

Or what are some maintenence things i can do while i have such easy access to everything. New valve-cover gaskets, spark plugs, o2 sensor, etc.

The engine is out of an '03 monte carlo with 73k miles on it.

Sorry i wasnt specific enough :P