Does anyone know anything about the new design coil? http://www.msdignition.com/Products/...ctor_Coil.aspx. My car runs fine, should I bother to replace it with one of these? Taking into consideration the mods in my sig, and more in the process, will I really notice any difference if I replace the stock coil? I've read lots of old mixed reviews but what about an up to date one?