The instructions in the factory service manuals do not mention it. However, aluminum heads can and will seize
to spark plug threads, especially cadmium plated ones, it is a light colored metal rather than blue/black steel.
It is important that you apply anti-seize to the threads of any threads used with aluminum heads.
All bolts being attached to aluminum heads, such as alternator and power steering brackets, should have
anti-seize or light oil applied to prevent thread galling.

This compound must be applied in the correct amount and at the correct place. Too little compound will
cause gaps in the contact between the spark plug threads and the spark plug hole.
Too much may allow the spark to jump to a buildup rather than to the spark plug electrode.
Apply a small amount to the threads while keeping the 1/4-1/3 portion of them closest to the tip free and
clean.

Almost any high temp aluminum compatible anti-seize compounds will fine to use. You should also obtain
some dielectric grease (silicon grease). Apply a bit to the spark plug boots when installing them on the plugs.
This will prevent them from sticking to the plug insulator over time and temperature.
Next plug change you will be thank yourself when you need to remove them again.

Remember to remove spark plugs from aluminum cylinder heads only when the engine is cool
Aluminum and steel expand and contract at different rates, removing spark plugs from an
aluminum cylinder head while hot can cause thread and cylinder head damage. In addition it can cause
valve or other internal warp due to cool air entering the spark plug hole. Your unburned
fingers will thank you as well. Twist the boots a quarter of a turn as you pull on them to aid in removal.

Before installing the spark plugs, make sure the threads are clean and in good condition. If not,
use a thread chaser. Install the spark plugs solidly finger tight.
Torque to 11 lb/ft.

If you wish to index your plugs, mark them with a felt tip pen so you can direct the open part of the gap
(opposite where the ground electrode is attached to the plug body) toward the general direction of the intake
valve.
Use index shims if needed or trade plugs. Close usually is good enough, exact is not normally required. The
theory is the spark will have a more free access to the intake charge.