I got my engine to start up after replacing the ignition coil and playing with the dist....so that's good! However I ran into a hang up....I bought new plugs and wires only to find the plugs were too small! I pulled the starter an this is the engine cast# D4DE-6015-BA. I deducted it is a 74 V-8 but which one? All the V-8 plugs I've found are AP45's and these are Motocraft ASF42C.....what you guys think?