Ive got myself a Rat rod project and i havent done anything like this before. Im not sure about the origin of my flat head engine accept the guy said its a 48 merc ab... I need to get a new fuel pump, as this one is leaking.. but i dont know where to start. Im hoping for some general advice on fixing up this old car, and specifically how to tell exactly what this engine is : as the information on some of the other parts wasnt accurate. (Ive got a`27 T cab .. model t fenders custom made truck bed, and hand made frame)