Originally Posted by JBrady5555
Replace the Intake and Exhaust manifold gaskets since they have to be removed for the freeze plug job
FWIW, the 4.0L uses a single common gasket for the intake and exhaust manifolds.
You might want to give the throttle body and IAC valve a clean while you have the intake manifold off, and you might also consider the fuel injector upgrade.
One piece of advice I can give you is to slightly modify the FSM pattern for re-torquing the manifold bolts. If you do it the FSM way, the first thing you torque is the exhaust manifold nut nearest the front of the engine, and the last thing you torque is the same nut at the firewall end. That final nut is impossible to get a torque wrench onto with the intake in the way reducing access to almost nothing.
Instead, torque the firewall-end nut first, before you put the intake back on, and do the nut at the front of the engine last. Then it's easy.