I'd suggest a trip to the public library to scan the workshop manual, or if that doesn't give you any hints, then a subscription to www.alldatadiy.com to follow their step by step directions. I suppose you could also take the head off with the intake and exhaust and figure it out after that.
My database just says to remove the intake and exhaust manifolds. It doesn't imply that this is a problem. Maybe you just need better tools or you need to strip away more items.
INTAKE MANIFOLD REMOVAL:
NOTE: THE ENGINE INTAKE AND EXHAUST MANIFOLD MUST BE REMOVED AND INSTALLED TOGETHER. THE MANIFOLDS USE A COMMON GASKET AT THE CYLINDER HEAD.
- Disconnect the battery negative cable.
- Remove air cleaner inlet hose from the resonator assembly.
- Remove the air cleaner assembly.
- Remove the throttle cable, vehicle speed control cable (if equipped) and the transmission line pressure cable.
- Disconnect the following electrical connections and secure their harness out of the way:
- Throttle Position Sensor
- Idle Air Control Motor
- Coolant Temperature Sensor (at thermostat housing)
- Intake Air Temperature Sensor
- Oxygen Sensor
- Crank Position Sensor
- Six (6) Fuel Injector Connectors
- Manifold Absolute Pressure (MAP) Sensor.
- Disconnect HVAC, and Brake Booster vacuum supply hoses at the intake manifold.
- Perform the fuel pressure release procedure.
- Disconnect and remove the fuel system supply line from the fuel rail assembly.
- Remove the accessory drive belt.
- Remove the power steering pump from the intake manifold and set aside.
- Raise the vehicle.
- Disconnect the exhaust pipes from the engine exhaust manifolds.
- Lower the vehicle.