well I have done a lot of work on cars but never a head gasket now what do I need to know about changing a head gasket on a 1994 mazda b4000 do I need to do a timing job after just basically how do I do it from A to Z
thank you

You're kidding, right? You want us to post about 20 pages of shop manual information in a reply to your question? Go to eautorepair (http://eautorepair.net/?Vid=107177) and get a 1-week subscription ($12)and download to your heart's content. That will give you diagrams, torque specs, timing information.