This is a relatively light torque setting. The heads are aluminum and therefore prone to stripping/overtorque. It you are planning on doing most maintence yourself - buy a torque wrench. You'll need one for the lug nuts as Volvo rotors tend to be sensitive to improper torquing (ie warping). I have a 1/2 and 3/8 inch by craftsman.

Also remember to use antiseize on the threads. Best of Luck

Andrew