Wrecking yards, junkyards, salvage yards, previously owned parts yards--call them what you will--are good sources of parts, particularly for older vehicles or limited budgets, although most parts available from salvage yards are beyond the scope of this book. Auto wrecking yards range from the incredibly sophisticated computer--run inventories to stumblebum one-man operations where nobody knows exactly what they have except the inevitable snarling dog.
In most cases, don't expect the wrecking yards to supply the smaller parts. They prefer to deal in complete assemblies. Among the better deals in wrecking yards are engines, transmissions, rear axles, body parts, and wheels. The cost of these parts from a yard is generally about one-half the cost of new parts. Most junkyards are not interested in selling carburetors, voltage regulators, and other small parts, but if they do, their cost will be negligibly less than the cost of rebuilt parts, and rebuilt parts are a far better deal.
Some wrecking yards may have two prices--one if they remove the parts and one if you do it. Most yards will prefer to remove parts themselves, but be careful. Time is money when removing parts, so a lot of yards, particularly the less organized, will remove an engine or rear axle with a cutting torch instead of unbolting it. This makes it necessary for you to buy small parts, such as motor mounts, brake lines, spring hangers, and other hardware, that were destroyed by the cutting torch.