I dont know if the duratec 3.0 uses the same coil. But I got a good niehoff one for 82 bucks, the autozone brand one was 50 but I heard bad stuff about those.
The 3.0 misses a whole lot and it could be the wires, plugs, coil, and who knows what. As of right now I can get in 4th OD because the dealer said it doesn't have enough power to shift into 4th. Thank god it wasn't the tranny.
good luck