well thats an obvious one, i already have several, what i'm really looking for is something that explains the theory behind a motor and tranny, i like to understand (or at least have some idea) the reason why i'm doing something to the vehicle, "instead of insert bolt A into nut B". that way if i understand the reason why, i may actually get more out of the parts that i'm working on, than if i just did a "paint by numbers" job. comprendo amigo??