95 Ford Windstar LX 3.8 V6 how involved to replace intake manifold gaskets?

INTAKE MANIFOLD
Removal
Release fuel pressure and disconnect fuel lines. Refer to FUEL PRESSURE RELEASE & FUEL LINE CONNECTIONS. Remove cowl top vent panel.
Disconnect negative battery cable. Drain cooling system. Remove air cleaner assembly and heat tube. Disconnect control cables and linkage at throttle body. Disconnect accelerator cable bracket and secure it aside.
Disconnect necessary linkages at intake manifold. Disconnect wiring harness connectors, vacuum hoses, coolant hoses and PCV hoses as necessary. Remove heater tube with fuel lines attached.
Remove A/C compressor support bracket (if equipped). Remove throttle body and EGR valve assembly. Note location of upper intake manifold bolts and studs. Remove upper intake bolts and studs. Remove upper intake manifold. See Fig. 3.