They are GREAT for a normally aspirated 3.8 V6. For a Turbocharged Buick, they are HORRIBLE, TERRIBLE, LOUSY, JUNK, WORHTLESS, TOTAL PIECES OF FECAL BERRY PUNCH! Do NOT use ROL head gaskets. ROL makes a good oil pan gasket, and just about every other gasket used in our engines. The head gaskets do NOT have a wire fire ring inside the gasket. They will BLOW at 15lbs. of boost with NO detonation.
Ok Chris, I will type s-l-o-w for just you. The ROL head gaskets are the BEST ones out there, especially for a stageII's running 30+ pounds of boost. But, only on Chris' car.:biggrin: