To be honest, in order to easily get a socket down into the plug holes you'll need to remove the y-pipe from the top of the engine. Take the bolts off, bag them if needed and tape or label and attach to the part they go with so you don't lose them. Once you get the plug wires off you will reveal the plugs themselves and then you can use a socket + extension to get each plug out. Why not also clean the plug valley while they are out, clean the debrise away from the hole carefully not to have it fall into the cylinders.
good luck,
eric