I just bought a set of 4 550cc tan fuel injectors from an rx7. I know that I need to get new connectors, as the new injectors have a square plug. Where's the best place to find the connectors? How exactly do I splice the wires? Anyone ever have problems fittin these on the 7m fuel rail? Also, anyone know where I can find 2 more of these rx7 injectors (part # 195500-1370)?