the 4 intake port gaskets, tb gasket, pcv plate/cyclonic valve and it's gasket, may as well get a set of plugs as you are almost down to them (bkr6ek/2288 ngk, f7ldcr/fr7ldc+(they changed the #)/7402 bosch super) the water pump is a little easyer while the intake is off, you can do the o-rings on the back of the tubes, and the 4 knock sensors are only possible with the intake off, they will probably have cracks in them but that doesn't mean they are bad, it's a crap shoot when one will die and then you need to pull the intake, they are testable but you need a graphing meter, and a hammer, i've noticed new ones are more sensitive