Last month, in the first of our four-part series, we covered gas welding. This month we'll continue by delving into MIG welding—far and away the most popular welding process used for classic trucks.

There are only a few tools that can take your car-building capability to a significantly higher level. A new set of sockets? Nice. Torque wrench? Must have. Dial calipers? Fancy. But more than any ...