I know this is an old thread but i have a question on the coil..I have also done this GM module upgrade and currently using the matching square GM coil, which doesnt look right on a mopar intake..lol.. Does anyone know of a round coil that looks like the old original mopar coils, but can be used with the GM HEI module and not need the ballsat and all? in other words, a coil that acts like the GM HEI coil but looks like the old mopar style coils?