[sloboy89]

Spark plug socket, ratchet. remove 1 at time by unplugging the spark plug wire and using the ratchet/socket to 'unscrew' the spark plug. Install new one and reattach the wire. Pretty easy

On reinstallation, use a torque wrench and don't overtorque the spark plugs. Proper torque is 18.4 to 25 ft-lb. (I just go for the middle and torque to 22 ft-lb).

 

[sloboy89]

Honestly, torquing your plugs isn't entirely necessary if you don't have a torque wrench, but it is always recommended by the manufacturer.

Probably not, but you'll change your mind if you strip out the threads in the aluminum head.