im starting to look into ignition for my setup , i dont know much about ignition systems and how to upgrade them ive never had to worry about it when my power settings. what should i get for a 400whp and up goal?

 

I have a msd 6al that i am going to use for my 400whp goal. THe reason why i have msd 6al i traded a black widow wing for the msd and money. So I would like to know which one is better also

 

is there a difference? i always thought an sci was a rebadged 6 box for more cash