How do you replace the back spark pulgs on a 1987 Pontiac fiero?

To replace the back spark plugs on a 1987 Pontiac Fiero, first ensure the engine is cool and disconnect the negative battery cable. Access the rear spark plugs by removing the engine cover and any components obstructing them. Use a spark plug socket and ratchet to carefully unscrew the old plugs, then install the new ones, ensuring they're properly gapped. Finally, reconnect everything and the battery cable before starting the engine.