1991 Ford Mustang Intake manifold gasket

Hello

I take it you are talking about the upper intake manifold? I have attached the info.

REMOVAL

Disconnect electrical connectors.
Disconnect the throttle linkage at the throttle ball and transmission linkage from throttle body. Remove two bolts securing bracket to intake manifold and position bracket with cables out of way.
Disconnect upper intake manifold vacuum fitting connections by disconnecting all vacuum lines to vacuum tree, vacuum lines to EGR valve, vacuum line to fuel pressure regulator and canister purge line.
Disconnect PCV system by disconnecting hose from fitting on rear of upper manifold, and disconnect PCV vent closure tube at throttle body.
Remove two EGR coolant lines from fittings on EGR spacer.
Remove six upper intake manifold retaining bolts.
Remove upper intake and throttle body as an assembly from the lower intake manifold.
INSTALLATION

Inspect the mounting faces of the upper intake manifold.
Position new gasket on lower intake mounting face. The use of alignment studs may be helpful.
Install upper intake manifold and throttle body assembly to lower manifold. Ensure gasket remains in place (if alignment studs are not used).
Install six upper intake manifold retaining bolts. Tighten to 12-18 lb. ft. (16-24 N-m).
Install EGR coolant lines to fittings on EGR spacer.
Connect PCV hose to rear of upper manifold, and connect PCV vent closure tube to throttle body.
Connect vacuum lines to vacuum tree, EGR valve, fuel pressure regulator and canister purge line.
Position throttle linkage bracket with cables to upper intake manifold. Install two attaching bolts and tighten. Tighten to 8-10 lb. ft. (11-13 N-m) Connect throttle cable and AOD transmission cable to throttle body.
Connect electrical connectors at air bypass valve, TP sensor, and EGR position sensor. NOTE: If lower intake manifold was removed, fill and bleed cooling system.