:evil: does anybody find it hard to change the spark plugs on there grand prix or even tighten certain bolts of the headers on there gp's also. is there a special tool that can maybe do this. i'm really frustrated taking a half hour or so on one bolt or like 2 certain spark plug!there must be an easier way please help.if any know of a special tools for the headers and spark plug where theyre hard to reach would be appreciated. thanx...