To your original question, change your alternator and nothing else. Alternator output has nothing to do with your ballast resistor, nor does your coil being chromed , pink, green.... WOW!!Wow! Look at the info growing here! All i wanted to do was buy a chrome coil for engine dress up! Internal resistor, external resistor??? What chromie do i get with my ballast and distributor?
To your original question, change your alternator and nothing else. Alternator output has nothing to do with your ballast resistor.... WOW!!