there is no ballast resistor. and there is no advance mechanism on any magnum distributor. 12v to the msd and you will need an aftermarket or early distributor if you are changing it to carb. all the advance in the magnums comes from the ecu, and the ecu may not like the msd. id call msd and get their recommendations.

It may be ugly, but it sure is slow.

Girls comb their hair in rear view mirrors and the boys try to look so hard....