Tourque wrench

[Spike Strip]

You really don't have to buy anything. Go to Vatozone and borrow/rent the appropriate torque wrench. They have good ones and the tolerance on those head bolts is wide enough to make precision not really an issue. Just re-torque after a bunch of heat-cycles (both head and int/exh) and then again after a few hundred miles.

 

[thorslc1977]

Kind of expensive but I really like my Gearwrench digital one. It clicks;has lights and audible tone that changes pitch as approach setting. Really helps when you can't see corners or torquing something buried deep in engine bay