so far i have a vacuum advance HEI distrib and an accel cap and rotor

i am thinking about getting an Accel HEI module

and spark box with coil

what exaclty do these spark boxes do??

provided superior igniton so that all fuel is burned to allow more timing advance???

also, how would i set up all that i have listed above???

since distrib aint used anymore, my teacher didnt go over them in school

thanx!!!!!!!!