I am putting in msd coil packs and 9 mm ford racing wires along with NGK Iridium IX Performance Spark Plugs. Are these good spark plugs or should i go ford racing ones because my car only has bolt ons. I am also having them clean out the imrc at the same time . I was thinking of replacing the alternator as well with a chrome one. It is a Powermaster Alternator - 200 Amp Chrome (anyone have experience with these?). What else should i do at the same time as this that would be a good upgrade or maintainence at the same time? Any help would be appreciated