I just used a ratchet and can't remember the size but a normal socket and some extensions, I remember them coming out pretty easily on mine, the only one that was a pain was the back right I believe, thats where you had to assemble the extensions within the deep hole that the spark plug is in.
2001 Ironman Daily Driver... 3.5" suspension lift (OME912 springs and 1" spring spacer), ball joint flip, 1.5" front diff. drop, 33"x12.5 TrXus MT, 16x10 Eagle Alloy rims, Interceptor, PV muffler, K&N air filter, Alpine Supercharger, Bilstein shocks, and some trimming.
2000 Ironman Project LS-1 VX... very slow progress but someday....... ohhhhh someday......