Hello and welcome to Just answer.com, Super mechanic here. About your vehicle.
Let me give you both the upper and lower intake instructions. Although you can sometimes take them both off together when you get the fuel lines out of your way and have the distributor out. On the distributor you will want to use a small wrench or a swivel socket, as it is a tight spot in there.
Intake Manifold Replacement (Upper)
REMOVE OR DISCONNECT
INSTALL OR CONNECT
Intake Manifold Replacement (Lower)